Assertion: castle's keep | /r/HasProperty | dictated by the lay of the land
Facets:
Source sentences:
text: Until the late 12th century castles generally had few towers; a gateway with few defensive features such as arrowslits or a portcullis; a great keep or donjon, usually square and without arrowslits; and the shape would have been dictated by the lay of the land (the result was often irregular or curvilinear structures).