Assertion: booby's leg | /r/HasProperty | strong
Facets:
value: for procellariiformes
type: OTHER
Source sentences:
text: The legs are short and strong, and the feet are large and totipalmate (webbed between all four toes).
text: The legs are strong for Procellariiformes, making them and the giant petrels the only members of that order that can walk well on land.