Assertion: nebula's hydrogen | /r/HasProperty | helium 2700 oxygen
Facets:
Source sentences:
text: Rel Si Hydrogen 28,000 Helium 2700 Oxygen 24 Carbon 10.0 Nitrogen 3.1 Neon 3.0 Magnesium 1.1 Silicon 1 Iron 0.9 Sulfur 0.52