Assertion: stingray's venom | /r/HasProperty | extracted for the purpose
Facets:
value: in ancient greece
type: LOCATION
value: from stingray spines
type: OTHER
Source sentences:
text: In ancient Greece, venom was actually extracted from stingray spines for the purpose of being used as an anesthetic by dentists.
text: In ancient Greece, venom was actually extracted from stingray spines for the purpose of being used as an anesthetic by dentists.