Assertion: pit viper's head | /r/HasProperty | triangular-shaped
Facets:
value: triangular
type: DEGREE
Source sentences:
text: Pit vipers also have triangular-shaped heads.
text: Chocoan forest pit vipers have triangular shaped heads, hence the common name "lancehead.
text: Pit vipers have triangular-shaped heads, but venomous coral snakes do not, Steen said.