Assertion: dinosaur's feature | /r/HasProperty | long tusk
Facets:
Source sentences:
text: Narwhals are medium-sized whales with one highly distinguishing feature: a long tusk that projects from the front of their heads.
text: One interesting feature they had was their long tail that they used like a bullwhip.
text: The most striking feature of Epidexipteryx hui was its four long tail feathers.