Assertion: pigeon's bird | /r/CapableOf | throw their heads
Facets:
value: to let
type: PURPOSE
value: to swallow
type: PURPOSE
Source sentences:
text: Most birds take a sip of water and then throw back their heads to swallow.
text: Most birds have to toss their head back to drink.
text: Most birds sip water and then throw their head back to swallow
text: Most birds take sips of water and then throw their heads back to let the water trickle down their throats.