Assertion: lisp's function | /r/CapableOf | return true
Facets:
Source sentences:
text: However, when a function is said to ``return true'' or to ``be true'' in some circumstance, this means that it returns some value other than nil , but not necessarily t .
text: When a function is said to ``return false'' or to ``be false'' in some circumstance, this means that it returns nil .