Assertion: gas | /r/HasProperty | pure element
Facets:
value: almost
type: DEGREE
Source sentences:
text: In 1809, chemists suggested that the gas might be a pure element, and this was confirmed by Sir Humphry Davy in 1810, who named it from Ancient Greek: χλωρός, romanized: khlôros, lit. 'pale green' based on its colour.
text: The gas that is used for energy in our homes is almost pure methane.