Assertion: acorn's seed | /r/HasProperty | rarely two seeds
Facets:
Source sentences:
text: It is a nut, containing a single seed (rarely two seeds), enclosed in a tough, leathery shell, and borne in a cup-shaped cupule.
text: It is a nut, and contains a single seed (rarely two seeds), enclosed in a tough, leathery shell.
text: It usually contains a single seed (rarely two seeds), enclosed in a tough, leathery shell, and borne in a cup-shaped cupule.