# Žák

> Czech former pond

**Wikidata**: [Q10296544](https://www.wikidata.org/wiki/Q10296544)  
**Source**: https://4ort.xyz/entity/zak

## Summary
Žák was an artificial pond located in Prague, Czech Republic, that no longer exists in its original capacity. Classified as both an artificial body of water and a former entity, it represents a geographical feature with past existence, now terminated. The site is documented with precise coordinates at 50.0855556°N, 14.6933333°E in the Újezd nad Lesy area of Prague.

## Key Facts
- **Entity Type**: Artificial pond, former entity
- **Location**: Prague, Czech Republic (Újezd nad Lesy area)
- **Coordinates**: 50.0855556°N latitude, 14.6933333°E longitude
- **Current Status**: Terminated/no longer existent
- **Google Knowledge Graph ID**: /g/1231439w
- **Commons Category**: Žák (Újezd nad Lesy)
- **Wikipedia Languages**: Czech (cs), Wikimedia Commons
- **Sitelink Count**: 2
- **Available Media**: Photograph on Wikimedia Commons (Žák_(former_pond)_6348_(04).jpg)
- **Classification System**: Part of "past" temporal category, distinct from current, proposed, or hypothetical entities

## FAQs

**What happened to Žák pond?**
Žák is classified as a former entity, meaning it has ceased to operate or exist in its original capacity as an artificial pond. The specific circumstances of its termination are not detailed in available records, but its status as a "former entity" confirms it no longer functions as a pond.

**Where exactly was Žák located?**
Žák was situated in Prague, Czech Republic, specifically in the Újezd nad Lesy district. Its precise geographical coordinates are 50.0855556°N latitude and 14.6933333°E longitude, allowing for exact historical mapping of its location.

**How is Žák categorized in knowledge bases?**
Žák appears in multiple knowledge systems including Google Knowledge Graph (ID: /g/1231439w), Wikimedia Commons under the category "Žák (Újezd nad Lesy)," and Czech Wikipedia. It holds 2 sitelinks across these platforms and is documented as an instance of both "artificial pond" and "former entity."

**What visual documentation exists for Žák?**
At least one photograph is available on Wikimedia Commons showing the former pond. The image file is titled "Žák_(former_pond)_6348_(04).jpg" and serves as visual evidence of its historical existence.

**How does the "former entity" classification apply to Žák?**
This classification indicates Žák has a definitive state of cessation—it possessed the characteristic of existence, but that existence is qualified as belonging strictly to the past. This distinguishes it from current active ponds, proposed water features, or hypothetical geographical elements.

## Why It Matters
Žák represents an important case study in geographical record-keeping and the documentation of landscape changes over time. Its precise classification as a former entity rather than simply an unrecorded or forgotten feature demonstrates how knowledge systems handle the lifecycle of man-made geographical features. The artificial pond's documentation with exact coordinates, photographic evidence, and cross-platform identifiers (including Google Knowledge Graph and Wikimedia projects) ensures that even though the physical feature no longer exists, its historical presence remains traceable for researchers, historians, and urban planners studying the development of Prague's landscape. This level of documentation prevents the loss of geographical history and supports accurate temporal analysis of land use changes in the Újezd nad Lesy area.

## Notable For
- **Temporal Specificity**: Possesses the defining characteristic of existence restricted to the past, with a clear operational endpoint
- **Cross-Platform Identification**: Maintains presence across Google Knowledge Graph (/g/1231439w), Wikimedia Commons, and Czech Wikipedia with 2 sitelinks
- **Precise Geolocation**: Documented with exact coordinate data (50.0855556°N, 14.6933333°E) enabling accurate historical mapping
- **Visual Documentation**: Photographic evidence preserved on Wikimedia Commons despite its status as a non-existent feature
- **Bilingual Documentation**: Available in Czech language and multimedia formats, ensuring accessibility across different user bases

## Body

### Definition and Core Characteristics
Žák was an artificial pond—a man-made body of water—located in Prague, Czech Republic. Its primary classification is dual: it is categorized as both an "artificial pond" and a "former entity." The latter designation carries specific meaning in knowledge organization, referring to an entity that no longer operates or has been terminated. This status is not simply a lack of current activity but represents a definitive cessation of existence in its original capacity. The pond possessed the characteristic of existence, but this existence is temporally qualified as belonging to the past, establishing a clear boundary between its operational period and its current non-existent state.

### Location and Geography
The former pond was situated in Prague, specifically within the Újezd nad Lesy area of the city. Its precise geographical coordinates are 50.0855556°N latitude and 14.6933333°E longitude, placing it within the municipal boundaries of the Czech capital. These coordinates allow for exact identification of the historical site location, facilitating mapping and spatial analysis for geographical and urban studies.

### Classification and Taxonomy
Within knowledge organization systems, Žák is classified as a subclass of entity with the specific constraint of concluded operational timeline. This placement ensures it retains fundamental entity properties while adhering to historical limitations. The classification system explicitly differentiates Žák from several related but distinct categories:
- **Current entities**: Active, functioning geographical features
- **Proposed entities**: Planned features not yet realized
- **Hypothetical entities**: Theoretical constructs without physical implementation
- **Replaced entities**: Features directly substituted by new structures
- **Canceled names**: Nomenclature changes rather than physical termination

These distinctions maintain logical integrity within geographical databases and knowledge graphs.

### Documentation and Identifiers
Žák maintains identification across multiple international knowledge platforms:
- **Google Knowledge Graph**: Assigned ID /g/1231439w, confirming recognition in major search ecosystems
- **Wikimedia Commons**: Hosted under category "Žák (Újezd nad Lesy)" with structured metadata
- **Wikipedia**: Presence in Czech language edition (cs) and Wikimedia Commons
- **Sitelink Count**: 2 connections across documented platforms

The commons category serves as a repository for related media, while the cross-platform identifiers ensure consistent reference regardless of access point.

### Media and Visual Records
Visual documentation of the former pond exists on Wikimedia Commons through the photograph titled "Žák_(former_pond)_6348_(04).jpg." This image provides direct visual evidence of the site, offering researchers and interested parties a tangible reference point for a feature that no longer exists physically. The commons category "Žák (Újezd nad Lesy)" functions as an aggregation point for any additional media content related to this historical geographical feature.

### Relationship to Broader Entity Classification
As a former entity, Žák exemplifies how knowledge systems handle geographical features with concluded lifecycles. The concept of "former entity" (associated with broader classifications including Wikidata item Q64139102 for the general concept) addresses the problem of temporal ambiguity by explicitly marking the end time of an entity's existence. This allows filtering based on operational status and prevents confusion between historical features and current geographical elements. The classification supports accurate historical record-keeping by ensuring terminated features remain distinguishable from active ones in databases and search results.

### Data References and Provenance
The structured data documenting Žák includes reference indicators pointing to source reliability. Country designation (Czech Republic) and location data (Prague) carry reference attributions from source Q191168, indicating verified origin points for these claims. The coordinate data similarly maintains reference provenance, ensuring traceability of geographical information to authoritative sources.