# Line 4

> Railway line of Beijing Subway

**Wikidata**: [Q304264](https://www.wikidata.org/wiki/Q304264)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Line_4_(Beijing_Subway))  
**Source**: https://4ort.xyz/entity/line-4-q304264


## References

1. Freebase Data Dumps. 2013