Assertion: platypus's spur | /r/HasProperty | poisonous
Facets:
Source sentences:
text: The adult male platypus is three times larger than the female and has poisonous spurs on its hind legs.
text: Male platypuses have a poisonous spur on each of their back legs.
text: In addition, the platypus has a poisonous spur on its ankles, making it one of the few venomous mammals that exist.