Assertion: opium's alkaloid | /r/HasProperty | extracted in december
Facets:
value: by friedrich sertürner
type: OTHER
value: from the opium poppy plant
type: LOCATION
Source sentences:
text: Morphine was discovered as the first active alkaloid extracted from the opium poppy plant in December 1804 in Paderborn, Germany, by Friedrich Sertürner.