Assertion: lagoon nebula | /r/HasProperty | giant interstellar cloud
Facets:
value: in the constellation
type: LOCATION
Source sentences:
text: The Lagoon Nebula (catalogued as Messier 8 or M8, NGC 6523, Sharpless 25, RCW 146, and Gum 72) is a giant interstellar cloud in the constellation Sagittarius.