Assertion: comet | /r/HasProperty | sparked by uv-photons
Facets:
value: from cosmic rays
type: TRANSITIVE-OBJECT
value: from the sun
type: LOCATION
Source sentences:
text: Comets are loaded with all the raw materials like water, CO2, methane, ammonia, needed to assemble more complex organic molecules, perhaps sparked by UV-photons from the Sun or cosmic rays, or in the shock that occurs when a comet hits the surface of a planet like the young Earth.