Assertion: nitrous oxide's use | /r/HasAspect | its origins
Facets:
value: in "laughing gas parties"
type: LOCATION
Source sentences:
text: The recreational use of nitrous has its origins in "laughing gas parties" which were held to demonstrate these properties to Davy's friends.
text: The recreational use of nitrous has its origins in "laughing gas parties" which were held to demonstrate these properties to Davy's friends.