Assertion: pit viper's pit | /r/HasProperty | organ
Facets:
Source sentences:
text: Eyelash viper has pair of heat-sensitive pits (organs used for detection of the heat of warm-blooded creatures) located between the nostrils and eyes.
text: Smells and tastes are then detected in two pits, called "Jacobson's organs", on the roof of their mouths.