Assertion: ecstasy's mdma | /r/CapableOf | emerge as substitute
Facets:
value: for its analog methylenedioxyamphetamine
type: PURPOSE
Source sentences:
text: MDMA likely emerged as a substitute for its analog methylenedioxyamphetamine (MDA), a drug at the time popular among users of psychedelics which was made a Schedule 1 substance in the United States in 1970.