Assertion: giraffe's valve | /r/CapableOf | stop blood
Facets:
value: from flowing to the brain
type: TRANSITIVE-OBJECT
Source sentences:
text: The giraffe has adapted to this by having a special valve in its artery that stops blood from flowing to the brain when it lowers its head.
text: The giraffe has adapted to this by having a special valve in its artery that stops blood from flowing to the brain when it lowers its head.