Assertion: hydrogen | /r/HasProperty | extracted
Facets:
value: from these substances
type: OTHER
value: from other sources
type: OTHER
value: from coal
type: OTHER
value: from water
type: OTHER
value: from fossil fuels
type: LOCATION
Source sentences:
text: Hydrogen can be extracted from fossil fuels, or can be produced by using the process of electrolysis to split water into hydrogen and oxygen.
text: Before it can be used as a fuel, the hydrogen must first be extracted from these substances and then contained, usually in highly compressed liquid form.
text: It can also be extracted from coal and from water using electrolysis.
text: Hydrogen must be extracted from other sources.
text: Instead, it has to be extracted from other substances, and the best one to extract it from is methane – in other words natural gas.
text: Hydrogen can be extracted from a number of “feedstocks,” including natural gas, water and even oil and coal 2.