Random triples
| Subject | Object |
|---|---|
| gptkb:Clear_Skies_Initiative | nitrogen oxides |
| gptkb:Clear_Skies_Initiative | sulfur dioxide |
| gptkb:Clean_Truck_Program | sulfur oxides |
| gptkb:Clean_Truck_Program | diesel particulate matter |
| gptkb:Clear_Skies_Initiative | mercury |
| gptkb:Clean_Truck_Program | nitrogen oxides |