Assertion: castle's area | /r/HasProperty | two-storey structures
Facets:
Source sentences:
text: The castle was a three-storey structure, 66 by 50 ft (20 by 15 m) with walls 8 ft (2.4 m) deep, surrounded by a 19 ft (5.8 m) thick outer wall, the blockhouses were slight smaller area, two-storey structures, trefoil in shape, with rectangular building on the fourth corner in the direction of the joining walls.