Assertion: methane | /r/CapableOf | form explosive mixture
Facets:
value: in air
type: LOCATION
value: at levels
type: OTHER
Source sentences:
text: Methane can form an explosive mixture in air at levels as low as 5 percent.
text: Methane forms an explosive mixture in air at a concentration of 5 to 15 percent by volume.
text: Finally, methane can form an explosive mixture if exposed to air.