Assertion: power station's unit | /r/CapableOf | begin operation
Facets:
value: in 2009
type: TEMPORAL
value: in 1981
type: TEMPORAL
Source sentences:
text: The plant had two active units at the time of its closure: Unit 4 began operation in 1981 and Unit 5 began operation in 2009.
text: The plant had two active units at the time of its closure: Unit 4 began operation in 1981 and Unit 5 began operation in 2009.