# U4

> Berlin U-Bahn line

**Wikidata**: [Q99708](https://www.wikidata.org/wiki/Q99708)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/U4_(Berlin_U-Bahn))  
**Source**: https://4ort.xyz/entity/u4-q99708-2


## References

1. Freebase Data Dumps. 2013