Assertion: methamphetamine | /r/HasProperty | developed in 20th century
Facets:
value: from its parent drug
type: OTHER
value: early
type: TEMPORAL
value: from amphetamine
type: OTHER
Source sentences:
text: Methamphetamine was developed early in the 20th century from its parent drug, amphetamine, and was used originally in nasal decongestants and bronchial inhalers.