Assertion: drug | /r/HasProperty | discovered
Facets:
value: by identifying the active ingredient
type: MANNER
value: historically
type: TEMPORAL
value: by studying chemicals
type: MANNER
value: traditionally
type: OTHER
Source sentences:
text: Historically, drugs were discovered through identifying the active ingredient from traditional remedies or by serendipitous discovery.
text: Historically, drugs were discovered by identifying the active ingredient from traditional remedies or by serendipitous discovery, as with penicillin.
text: Traditionally, many drugs and other chemicals with biological activity have been discovered by studying chemicals that organisms create to affect the activity of other organisms for survival.