Assertion: plesiosaur's flipper | /r/HasProperty | long neck
Facets:
value: extremely
type: DEGREE
Source sentences:
text: Of the largest plesiosauri, at several tons, Elasmosaurus had four long paddle-like flippers, an extremely long neck (the longest of any Plesiosaur) topped with a tiny head, and a short tail (typically no longer than the flippers).