| Similarity | Rank | |
|---|---|---|
| nitrogen_oxide | 0.841 | 78932 |
| air_pollutant | 0.779 | 77087 |
| particulate_matter | 0.776 | 54856 |
| sulfur_dioxide | 0.765 | 93673 |
| emission | 0.734 | 4559 |
| particulate | 0.722 | 43599 |
| CO2 | 0.716 | 9699 |
| Co_2 | 0.716 | 19859 |
| Co_2_emission | 0.710 | 88444 |
| carbon_monoxide | 0.708 | 39006 |
| pollutant | 0.707 | 14162 |
| greenhouse_gas | 0.696 | 18514 |
| GHG | 0.689 | 70082 |
| carbon_dioxide | 0.677 | 11994 |
| reduce_emission | 0.677 | 41104 |
| methane | 0.674 | 14641 |
| ozone | 0.671 | 18722 |
| CO2_emission | 0.671 | 26256 |
| carbon_dioxide_emission | 0.665 | 61386 |
| emission_from | 0.665 | 32492 |
| soot | 0.663 | 42732 |
| combustion_of | 0.662 | 77006 |
| air_pollution | 0.662 | 13199 |
| GHG_emission | 0.656 | 52810 |
| emission_reduction | 0.646 | 34127 |