Assertion: sperm whale | /r/HasProperty | sought by whaler
Facets:
value: for their sperm oil
type: PURPOSE
value: after
type: TEMPORAL
value: especially
type: OTHER
Source sentences:
text: This species was impacted by whaling in the 18th and 19th centuries, as sperm whales were especially sought after by whalers for their sperm oil, produced by the spermaceti organ.