Assertion: methane | /r/AtLocation | coal seams
Facets:
Source sentences:
text: CBM refers to methane that is found in coal seams.
text: Like CBM, CMM is a subset of the methane found in coal seams, but it refers specifically to the methane found within mining areas (e.g., within a mining plan), while CBM refers to methane in coal seams that will never be mined.