Assertion: inner ear's system | /r/MadeOf | two semicircular canals
Facets:
value: in each labyrinth
type: LOCATION
Source sentences:
text: The vestibular systems of lampreys contain two semicircular canals while those of hagfish contain a single canal.
text: Since the world is three-dimensional, the vestibular system contains three semicircular canals in each labyrinth.