Assertion: fin whale's baleen | /r/HasProperty | keratinous material
Facets:
value: in the mouth
type: LOCATION
Source sentences:
text: The first thing I had to do was to assess the state of the bones, and assess their supporting metalwork and all the baleen hanging from the skull (the baleen is the keratinous material in the mouth that the animal used to filter-feed when alive).