Assertion: nitrous oxide | /r/ObjectUse | used for labor analgesia
Facets:
value: by some hospitals
type: LOCATION
value: in the united kingdom
type: LOCATION
value: in finland
type: LOCATION
value: in australia
type: LOCATION
value: in canada
type: LOCATION
value: extensively
type: DEGREE
Source sentences:
text: Nitrous oxide is used extensively for labor analgesia in the United Kingdom, Canada, Australia, Finland, and
text: Nitrous oxide is a tasteless and odorless gas used as a labor analgesic by some hospitals.