Assertion: opium's use | /r/HasProperty | limited in most countries
Facets:
value: because of detrimental effects
type: CAUSE
value: because of their addictive properties
type: CAUSE
Source sentences:
text: In most countries the production, trade in, and use of narcotics are limited because of their addictive properties, detrimental effects, and the incidence of narcotic drug abuse.