Assertion: codeine | /r/HasProperty | extracted its original source
Facets:
value: from opium
type: OTHER
value: directly
type: MANNER
Source sentences:
text: While codeine can be directly extracted from opium, its original source, most codeine is synthesized from the much more abundant morphine through the process of O-methylation, through a process first completed in the late 20th century by Robert C. Corcoran and Junning Ma.