Assertion: python's head | /r/HasProperty | triangular
Facets:
Source sentences:
text: The head is triangular and is marked on top with a dark brown “spear-head” outlined in buffy yellow.
text: The head is triangular with a conspicuous row of thermoreceptive labial pits.
text: The head of the boa constrictor is long and triangular, with dark streaks from the eyes to the back of the jaw and another dark streak along the top.