Assertion: starfish's tube foot | /r/HasProperty | filled with seawater
Facets:
value: on its top side
type: LOCATION
Source sentences:
text: The tube feet are filled with seawater, which the sea star brings in through the madreporite on its top side.
text: Starfishes move using their tube feet, which are filled with sea water and they can move quicker than you might expect.
text: The tube feet are filled with seawater, which the sea star brings in through the madreporite (a sort of trap door) on its top side.
text: The tube feet are filled with sea water, which the sea star brings in through the sieve plate, or madreporite, on its top side.