| Similarity | Rank | |
|---|---|---|
| valdez | 0.822 | 29990 |
| amoco | 0.779 | 35150 |
| richfield | 0.723 | 68065 |
| braer | 0.693 | 29952 |
| bhopal | 0.685 | 35272 |
| petrobras | 0.673 | 62283 |
| lonrho | 0.670 | 20474 |
| mpl | 0.669 | 62062 |
| pemex | 0.662 | 59171 |
| pennzoil | 0.651 | 90189 |
| alaska | 0.643 | 13047 |
| carnon | 0.642 | 85489 |
| rhone-poulenc | 0.642 | 67876 |
| panguna | 0.640 | 75973 |
| nauru | 0.639 | 29488 |
| alaskan | 0.635 | 29428 |
| refinery | 0.634 | 13702 |
| agip | 0.633 | 96235 |
| conoco | 0.627 | 37892 |
| denega | 0.627 | 73838 |
| akatsuki | 0.623 | 99462 |
| out-of-court | 0.620 | 39753 |
| maru | 0.620 | 59962 |
| abadan | 0.619 | 73162 |
| polluter | 0.618 | 16007 |