Assertion: castle | /r/HasProperty | formidable obstacles
Facets:
value: in earlier years
type: TEMPORAL
Source sentences:
text: The castles that in earlier years had been formidable obstacles were easily breached by the new weapons.
text: After the Union of the Crowns in 1603, the castle was used as a military base and was a formidable stronghold used to hold prisoners of war.