Assertion: viper's pit | /r/HasProperty | sensitive
Facets:
value: highly
type: DEGREE
value: to heat
type: CAUSE
value: temperature
type: DEGREE
value: to infrared radiation
type: CAUSE
Source sentences:
text: The pit is highly sensitive to infrared radiation (heat) and serves as a direction finder in locating warm-blooded prey or predators.
text: Although the eyes of both true and pit vipers feature vertically orientated, elliptical, “cat like” pupils, one of the most notable physical differences between the two is that true vipers lack the temperature-sensitive facial pits that give the pit vipers their name.
text: Copperheads, cottonmouths and rattlesnakes are called pit-vipers because they have a pit near each nostril which is highly sensitive to heat.