Assertion: boy's penis | /r/HasProperty | about half the bird's length
Facets:
value: more commonly
type: DEGREE
Source sentences:
text: The lake duck is notable for possessing, in relation to body length, the longest penis of all vertebrates; the penis, which is typically coiled up in flaccid state, can reach about the same length as the animal himself when fully erect, but is more commonly about half the bird's length.