Assertion: owl's nest | /r/HasProperty | build by raven
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: They prefer to use old nests build by Ravens or other raptors, and will often reuse the same nests for several years.
text: This difference comes from the fact that the nests are usually built by some other species such as crows, ravens, squirrels, herons, red-tailed hawks, other hawk species etc.