Assertion: volcano's eruption | /r/CreatedBy | vent
Facets:
value: in march
type: TEMPORAL
value: probably
type: DEGREE
Source sentences:
text: The most impressive eruptions took place from a cluster of three closely spaced, continuously incandescent vents (2) at the SW end of Crater 3, probably corresponding to vents 3 and 4 in March (19:03).