| chemical → ReceivesAction → produced by incomplete burning … | 0.43 | |
| chemical → ReceivesAction → released into the air | 0.25 | |
| chemical → ReceivesAction → produced | 0.25 | |
| chemical → ReceivesAction → released | 0.23 | |
| chemical → ReceivesAction → identified in cigarette | 0.16 |