Assertion: henry | /r/CapableOf | undertake a wave of castle-building
Facets:
value: during his visit in 1171
type: TEMPORAL
value: to protect his new territories
type: PURPOSE
Source sentences:
text: Henry undertook a wave of castle-building during his visit in 1171 to protect his new territories—the Anglo-Normans had superior military technologies to the Irish, and castles gave them a significant advantage.