Assertion: blue whale | /r/HasProperty | sighted
Facets:
value: during aerial surveys of hawaiian waters
type: TEMPORAL
Source sentences:
text: The blue whales have been sighted and detected in the northern Indian Ocean region including the Gulf of Aden, the Arabian Sea and across the Bay of Bengal.
text: No blue whales were sighted during aerial surveys of Hawaiian waters conducted from 1993 to 1998 or during shipboard surveys conducted in the summer/fall of 2002 .