Assertion: nebula's hydrogen | /r/HasProperty | green
Facets:
Source sentences:
text: The nebula's glowing gases produce the colors in this image: nitrogen (red), hydrogen (green), oxygen (blue), and helium (violet).
text: The nebula's glowing gases produce the colors in this image: nitrogen (red), hydrogen (green), oxygen (blue), and helium (violet).
text: This picture has been composed from three separate images taken in the light of ionized nitrogen (represented by red), hydrogen (green), and doubly-ionized oxygen (blue).
text: Oxygen emission is blue, sulfur is orange, and hydrogen and nitrogen are green.