Assertion: volcano's rift zone | /r/HasProperty | active
Facets:
value: historically
type: TEMPORAL
value: across most of its length
type: OTHER
Source sentences:
text: a 60 km (37 mi) rift trending southwest from the caldera to the sea and a further 40 km (25 mi) underwater, with a prominent 40° directional change along its length; this rift zone is historically active across most of its length.
text: The second, northeastern rift zone extends towards Hilo and is historically active across only the first 20 km (12 mi) of its length, with a nearly straight and, in its latter sections, poorly defined trend.