Assertion: opium's morphine | /r/HasProperty | natural opiate
Facets:
Source sentences:
text: Morphine, prescribed as a pain reliever, is a natural opiate, but is frequently used to illegally to get high.
text: Heroin is derived from morphine, which is a natural substance that is gathered from the opium poppy plant.
text: It is derived from morphine, a natural narcotic analgesic purified from the flower of the opium poppy.