Assertion: crude opium | /r/HasProperty | available
Facets:
value: for thousands of years
type: TEMPORAL
Source sentences:
text: Crude opium has been available for thousands of years, but with the expansion of British opium trade in Asia in the 18th and 19th centuries and the development of the hypodermic syringe in the late 1860s, the abuse of opioids rose dramatically.