Assertion: hamstring | /r/CapableOf | extend one leg
Facets:
value: to the backside of the body
type: OTHER
value: by placing the heel
type: MANNER
Source sentences:
text: Hamstrings extend one leg out by placing the heel on a slightly raised surface, such as a stair or curb.
text: The hamstrings flex the knee joint and extend the thigh to the backside of the body.