Assertion: hourglass nebula | /r/ObjectUse | used as sky
Facets:
value: in final doom
type: TEMPORAL
value: very soon
type: TEMPORAL
Source sentences:
text: The Hourglass Nebula was used as a SKY in Final Doom very soon after its first detailed imaging by the Hubble.
text: The Hourglass Nebula was used as a SKY in Final Doom very soon after its first detailed imaging by the Hubble.