Assertion: butterfly's leg | /r/HasProperty | a pair of antennae
Facets:
Source sentences:
text: Like other insects, butterflies have six jointed legs, a pair of antennae, 3 body parts and an exoskeleton.
text: They have 6 legs, one pair of antennae, a segmented body that has three distinguishable parts: a head, a thorax and an abdomen.