Assertion: human body's limb | /r/HasProperty | modified into wing
Facets:
Source sentences:
text: They mostly have four limbs but some aquatic mammals have no limbs or limbs modified into fins and the forelimbs of bats are modified into wings.
text: They mostly have four limbs but some aquatic mammals have no limbs or limbs modified into fins and the forelimbs of bats are modified into wings.