Assertion: humpback whale's head | /r/HasProperty | covered with knobs called tubercles
Facets:
Source sentences:
text: The head and lower jaw are covered with knobs called tubercles, which are hair follicles and are characteristic of the species.
text: The head and lower jaw are covered with knobs called tubercles, which are hair follicles and are characteristic of the species.
text: The head and lower jaw are covered with knobs called tubercles, which are actually hair follicles, and are characteristic of the species.