Assertion: castle's wall | /r/HasProperty | thick
Facets:
Source sentences:
text: The strength of the design typically came from the thickness of the walls: usually made of rag-stone, as in the case of Dover Castle, these walls could be up to 24 feet (7.3 metres) thick.
text: Tons of explosives were used in the effort, but the walls of the bunkers were so thick that many of the structures survived the impact and remain standing.
text: The walls on the Island Battery were 10 feet (3.0 m) high, and 8 feet (2.4 m) thick.