SimilarityRank
combustion 0.813 26558
liquid_fuel 0.703 86707
methane 0.693 14641
carbon_dioxide 0.693 11994
emission_from 0.673 32492
nitrogen_oxide 0.672 78932
of_fossil_fuel 0.671 44531
burning_of 0.668 23384
Co_2 0.667 19859
NOx 0.662 71494
CO2 0.654 9699
emission 0.646 4559
fossil_fuel 0.645 9239
Co_2_emission 0.640 88444
carbon_dioxide_emission 0.638 61386
greenhouse_gas 0.635 18514
sulfur_dioxide 0.632 93673
internal_combustion_engine 0.632 72067
air_pollutant 0.627 77087
oxidation_of 0.626 75521
carbon_monoxide 0.625 39006
biomass 0.625 8352
feedstock 0.622 44952
particulate 0.620 43599
soot 0.619 42732