Assertion: fortress's wall | /r/CapableOf | average 1.5 metres
Facets:
Source sentences:
text: When it was built in 992 in France the stone tower at Château de Langeais was 16 metres (52 ft) high, 17.5 metres (57 ft) wide, and 10 metres (33 ft) long with walls averaging 1.5 metres (4 ft 11 in).