Assertion: butterfly's marking | /r/HasProperty | ultraviolet
Facets:
Source sentences:
text: The butterflies themselves may even have ultraviolet markings on their wings to help them identify one another and locate potential mates.
text: The butterflies have ultraviolet markings on their wings that assist them locate prospective mates.
text: The butterflies have ultraviolet markings on their wings that help them locate potential mates.