Assertion: cattail's leaf | /r/HasProperty | important food source
Facets:
value: for mule deer
type: TRANSITIVE-OBJECT
value: for elk
type: TRANSITIVE-OBJECT
value: for birds
type: TRANSITIVE-OBJECT
Source sentences:
text: Leaves and fruit of elderberry are important food source for birds, elk and mule deer.
text: Twigs and leaves of buttonbush are important source of food for white-tailed deer.