Assertion: viper's pit | /r/AtLocation | both sides of the head
Facets:
value: between the eye
type: LOCATION
value: between the nostril
type: LOCATION
Source sentences:
text: They all have heat-sensing pits located on both sides of the head.
text: The copperhead has heat-sensing pits located on either side of its head, midway between the nostril and the eye.
text: Pit vipers have pits, or hollows, located between the nostril and the eye on either side of the head.