Assertion: brittle star's mouth | /r/HasSubevent | the stomach pouch
Facets:
Source sentences:
text: usually five long thin (in comparison with the disk) articulated arms that break off easily; a row of papillae (small nipple-shaped structures) known as the arm comb near the base of each arm; lower surface of the disk containing a central mouth leading to the stomach pouch; mouth divided by five jaws