Assertion: sea's area | /r/HasProperty | calm
Facets:
value: very
type: DEGREE
value: at the time
type: TEMPORAL
Source sentences:
text: Explorer was abandoned in the early hours of 23 November 2007 after taking on water near the South Shetland Islands in the Southern Ocean, an area which is usually stormy but was calm at the time.
text: The area in the center of a gyre tends to be very calm and stable.