Assertion: duck's vagina | /r/HasProperty | complex
Facets:
Source sentences:
text: Female ducks have evolved a complex vagina with several dead-end pockets and tunnels in order to confuse unwanted mates and prevent fertilization from the wrong male.
text: Female ducks are known to have complex vaginas that are lined with several dead-end pockets and tunnels in order to confuse unwanted male ducks and prevent forceful fertilization.