Assertion: opium's effect | /r/HasProperty | analgesic
Facets:
Source sentences:
text: Opium has long been used to produce analgesic effects upon the user and was used hundreds of years ago by the Chinese during surgery and ritualistic events.
text: Opium has long been valued for its analgesic effects.
text: Even in Chinese medicine, opium was used to produce an analgesic effect that would promote pain relief.
text: Opium has long been valued for its analgesic effects.