Assertion: ethylene | /r/CapableOf | serve as valuable anesthesia
Facets:
value: during surgery
type: TEMPORAL
value: for many years
type: TEMPORAL
value: during other medical procedures
type: TEMPORAL
Source sentences:
text: For many years, ethylene served as a valuable anesthesia during surgery.
text: For many years, ethylene served as a valuable anesthesia during surgery and other medical procedures.