Assertion: sperm whale's family | /r/HasProperty | rorqual
Facets:
Source sentences:
text: Baleen whales are grouped into four families: rorqual; right; gray; and pygmy right whale.
text: Mysticetes consist of four families: rorquals (balaenopterids), cetotheriids, right whales (balaenids), and grey whales (eschrichtiids).