Assertion: anhinga's head | /r/HasProperty | visible
Facets:
value: above water
type: LOCATION
Source sentences:
text: The birds are good divers; they swim submerged deep in water, so that only the head and neck are visible.
text: When he swimms his body is submerged and only the neck and head are visible which looks like a snake gliding over the water.
text: When they are swimming, only their long, narrow necks and heads are visible above water.