Assertion: castle's wall | /r/HasProperty | 20 m
Facets:
Source sentences:
text: The ancient Chinese capital for the State of Zhao, Handan, founded in 386 BC, also had walls that were 20 m (66 ft) wide at the base; they were 15 m (49 ft) tall, with two separate sides of its rectangular enclosure at a length of 1,530 yd (1,400 m).