Assertion: ethane | /r/HasProperty | detected in other comets
Facets:
value: since
type: TEMPORAL
Source sentences:
text: In 1996, ethane was detected in Comet Hyakutake, and it has since been detected in some other comets.
text: In 1996, ethane was detected in Comet Hyakutake, and it has since been detected in some other comets.