Assertion: volcano's vent | /r/HasProperty | observed at same positions
Facets:
value: during the night
type: TEMPORAL
value: as in late 1990
type: TEMPORAL
Source sentences:
text: During the night, four glowing but not erupting vents (1 and 2 in C2, and 1 and 2 in C3) could be observed, at the same positions as in late 1990.