Assertion: ether | /r/ObjectUse | used as anesthetic
Facets:
value: previously
type: TEMPORAL
value: in the article
type: LOCATION
Source sentences:
text: There's a very brief mention of ether used as an anesthetic in the article Chloroform#Anesthetic.
text: Previously used as an anesthetic, Diethyl ether is an organic compound used primarily as a solvent.