Assertion: woodpecker | /r/HasProperty | useful
Facets:
value: in removing insect pests
type: PURPOSE
Source sentences:
text: Woodpeckers are both useful and disturbing to humans.
text: They are useful in removing insect pests from trees.
text: Woodpeckers are both useful and disturbing to us humans.
text: These birds are useful because they help in removing insect pests from trees.