| http://www.w3.org/ns/prov#value | - rogen, nitrogen, argon, alkanes and the like, carbon dioxide from hydrogen, nitrogen, carbon monoxide, alkanes and the like, hydrogen sulfide from hydrogen, nitrogen, carbon dioxide, alkanes and the like, alkanes such as methane from hydrogen, nitrogen, ammonia, carbon monoxide, carbon dioxide, methanol, water vapor and the like, alkanols such as methanol or ethanol from hydrogen, carbon monoxide,
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