Assertion: opium's morphine | /r/HasProperty | alkaloid
Facets:
Source sentences:
text: Morphine is an alkaloid, which means that it contains mostly basic nitrogen atoms.
text: (Morphine is an alkaloid found in opium, which is the dried milky exudate obtained from the unripe seedpods of the poppy plant.)
text: Morphine is an alkaloid, the chemical class to which many drugs belong.