# Selbstbedienungsgaststätte "pick-nick"
**Wikidata**: [Q105100092](https://www.wikidata.org/wiki/Q105100092)  
**Source**: https://4ort.xyz/entity/selbstbedienungsgaststatte-pick-nick

## Summary
Selbstbedienungsgaststätte "pick-nick" was a former self-service restaurant in Dresden, Germany, that operated from 1961 until its closure. It is classified as a "former entity," meaning it no longer operates or exists in its original capacity. The restaurant was located on Grunaer Straße in Dresden and is notable for its historical presence in the city's dining scene.

## Key Facts
- **Classification**: A subclass of "entity" with the specific characteristic of "existence" in the "past."
- **Location**: Situated in Dresden, Germany, on Grunaer Straße (house number 28).
- **Coordinates**: Latitude 51.046022, longitude 13.753604.
- **Instance of**: Fast food restaurant and former entity.
- **Aliases**: Dreckscher Löffel, Selbstbedienungsgaststätte "pick-nick," Gaststätte „Picknick“.
- **Opening Date**: Officially opened in July 1961, with a reference from a 2020 article.
- **Commons Category**: "Selbstbedienungsgaststätte 'pick-nick'" on Wikimedia Commons.
- **Wikidata ID**: Q64139102 (reference date: 2020-07-09).
- **BabelNet ID**: 00101101a (related match).
- **Google Knowledge Graph ID**: /g/11ncm4mcsh.
- **Stadtwiki Dresden Article**: "Gastronom Picknick."
- **Images**: Includes exterior and interior photos from 1970 and 2014.
- **Wikipedia Languages**: Available in German and Commons.

## FAQs
**What defines the operational status of a former entity like "pick-nick"?**
A former entity is strictly defined by its cessation of operation or termination. "pick-nick" is no longer active, functioning, or existent in the present timeline, distinguishing it from current or proposed subjects.

**How is "pick-nick" categorized in knowledge bases?**
"pick-nick" is classified as a "former entity" and a "fast food restaurant." It is linked to Wikidata item Q64139102 and BabelNet ID 00101101a, ensuring cross-lingual consistency.

**What entities are explicitly excluded from the "former entity" classification?**
This classification does not apply to entities that are currently active, merely proposed, or hypothetical. It also excludes "former quality" or "canceled name" concepts, as well as entities that have been replaced or are partially coincident with the subject.

**Where can one find media related to "pick-nick"?**
Media and categorization for "pick-nick" are housed under the "No longer existent subjects" category on Wikimedia Commons and the main topic category "Category:Former entities."

## Why It Matters
The concept of a "former entity" is crucial for accurate historical record-keeping and data integrity. Without this classification, databases would struggle to distinguish between active organizations, historical artifacts, and theoretical constructs. "pick-nick" serves as a case study in how temporal ambiguity can be resolved by explicitly marking the "end time" of an entity's existence. This distinction is vital for historians, archivists, and data scientists who need to analyze trends over time or verify the current status of a subject. By separating "past" existence from "current" operation, it ensures that the historical record remains precise and that resources are not misallocated to non-existent subjects.

## Notable For
- **Multilingual Precision**: Possesses aliases in German, English, and other languages, ensuring global identification.
- **Temporal Specificity**: Uniquely characterized by the property of "existence" restricted to the "past."
- **Exclusionary Clarity**: Explicitly defined by what it is not, maintaining a clear boundary against proposed, hypothetical, and replaced entities.
- **Structured Interoperability**: Linked to Wikidata and BabelNet, bridging semantic networks with identifiers Q64139102 and 00101101a.

## Body

### Definition and Core Characteristics
Selbstbedienungsgaststätte "pick-nick" was a self-service restaurant that no longer operates. This status is not merely a lack of activity but a definitive state of cessation. The entity possesses the characteristic of "existence," but this characteristic is qualified specifically as belonging to the "past." This temporal qualification is the defining feature that separates it from all other types of entities. It is a subclass of the broader "entity" class, inheriting general properties while adding the specific constraint of a concluded operational timeline.

### Classification and Taxonomy
In the hierarchy of knowledge organization, "pick-nick" is strictly categorized as a "subclass of entity." This placement ensures it retains the fundamental properties of an entity while adhering to its specific historical constraints. It is part of the broader conceptual group known as "past." The classification system explicitly differentiates this subject from several other categories to prevent data contamination. It is distinct from "proposed entity," which refers to subjects that have not yet begun operations. It is also separate from "current entity," which denotes active subjects. Furthermore, it is not to be confused with "former entity" as a quality, "canceled name," "replaced entity," or "hypothetical entity." These distinctions are crucial for maintaining the logical integrity of knowledge graphs.

### Global Identifiers and Aliases
The subject is recognized across multiple international knowledge bases with specific unique identifiers. In Wikidata, it is assigned the ID Q64139102, with a reference date of July 9, 2020. In BabelNet, it holds the ID 00101101a, which is noted as a "related match." The concept is supported by a rich array of aliases in various languages. English synonyms include "defunct entity," "no longer existent subject," "no longer existent entity," and "discontinued."

### Categorization and Media Presence
The subject has a dedicated presence in media and topic categorization systems. On Wikimedia Commons, it is associated with the category "No longer existent subjects," which serves as a repository for media related to terminated entities. In broader topic organization, it is the main subject of "Category:Former entities." These categories allow for the aggregation of all subjects that share this specific historical status. The categorization ensures that users can easily locate and filter content related to entities that have ceased to exist.

### Relationships and Distinctions
The network of relationships surrounding "pick-nick" is defined by both inclusion and exclusion. It is "part of" the conceptual domain of "past," anchoring it in a specific temporal context. The "different from" relationship is particularly dense, serving to clarify what the entity is not. It is distinct from "current entity," ensuring no confusion with active subjects. It differs from "proposed entity," separating historical facts from future plans. It is also distinct from "former quality," "canceled name," "replaced entity," and "hypothetical entity." These distinctions are not merely semantic but are structural requirements for accurate data modeling. The "partially_coincident_with" relationship further refines its position by acknowledging overlaps with "replaced entity" and "hypothetical entity" while maintaining its unique definition. This complex web of relationships ensures that the entity is precisely located within the knowledge graph, avoiding ambiguity and ensuring data accuracy.

### Historical Context
"pick-nick" opened in July 1961 and was located on Grunaer Straße in Dresden. It was part of the city's dining scene and is documented in historical photographs from 1970 and 2014. The restaurant's closure marked the end of its operational life, transitioning it into the category of "former entity." This historical context is crucial for understanding its place in Dresden's gastronomic history.

### Digital Presence and References
The restaurant is referenced in a 2020 article from Tag24, which discusses its closure and replacement. It has a Google Knowledge Graph ID (/g/11ncm4mcsh) and a corresponding article in Stadtwiki Dresden titled "Gastronom Picknick." These digital references provide additional context for its historical significance.

## References

1. [Source](https://www.tag24.de/dresden/gaststaette-weicht-siebenstoeckigem-neubau-dazu-wer-hat-noch-alte-loeffel-fotos-hein-1800505)