Assertion: water moccasin | /r/CapableOf | use its heat-sensitive organs
Facets:
value: to detect its dinner
type: PURPOSE
value: on each side of its head
type: LOCATION
Source sentences:
text: The cottonmouth, like the rattlesnake and copperhead is a "pit viper," using its heat-sensitive organs on each side of its head to detect its dinner.