Assertion: squid's organ | /r/CapableOf | produce light
Facets:
Source sentences:
text: Their skin is covered with small organs called photophores, which produce light and the squid can completely control the intensity of the light.
text: ’s light organ produces the light—oxygen combines with calcium, adenosine triphosphate (ATP—the energy-carrying molecule of all cells) and a chemical called luciferin, when an enzyme called luciferase is present.
text: Each tentacle has an organ called a photophore, which produces light.