Assertion: plesiosaur | /r/HasProperty | encountered by williston
Facets:
Source sentences:
text: It was the first plesiosaur Mudge had ever found with gastroliths and the first plesiosaur encountered by Williston in general.
text: It was the first plesiosaur Mudge had ever found with gastroliths and the first plesiosaur encountered by Williston in general.