Assertion: oak's fruit | /r/Synonym | an acorn or oak nut borne
Facets:
value: in a cup-like structure
type: OTHER
Source sentences:
text: The fruit is a nut called an acorn or oak nut borne in a cup-like structure known as a cupule; each acorn contains one seed (rarely two or three) and takes 6–18 months to mature, depending on their species.