Assertion: castle | /r/HasProperty | difficult
Facets:
value: often
type: DEGREE
value: to convert dark
type: PURPOSE
Source sentences:
text: It was only later, with the pacification of a district, that the castle was abandoned, for new, cheaper and more homelike surroundings, for it was often far too costly and difficult to convert the cold, dark and forbidding fortresses into comfortable country residences.