| Similarity | Rank | |
|---|---|---|
| on_9_/_[number] | 0.793 | 46096 |
| the_9_/_[number]_attack | 0.751 | 41728 |
| the_World_Trade_Center | 0.661 | 43422 |
| after_9_/_[number] | 0.634 | 41674 |
| terrorist_attack | 0.628 | 15398 |
| WTC | 0.601 | 53436 |
| since_9_/_[number] | 0.578 | 64126 |
| after_September_[number] | 0.576 | 75057 |
| the_War_on_Terror | 0.574 | 63478 |
| Bin_Laden | 0.568 | 39834 |
| Flight_[number] | 0.568 | 91039 |
| post-9_/_[number] | 0.564 | 87391 |
| the_Iraq_War | 0.564 | 49782 |
| terror_attack | 0.560 | 43895 |
| 9_/_[number]_/_[number] | 0.558 | 28572 |
| the_invasion_of_Iraq | 0.549 | 59891 |
| September_[number]_th | 0.547 | 60181 |
| Ground_Zero | 0.543 | 80186 |
| 3_/_[number] | 0.541 | 28467 |
| Osama_bin_Laden | 0.539 | 29989 |
| Sandy_Hook | 0.539 | 93014 |
| the_Iraq_war | 0.537 | 36456 |
| Osama_Bin_Laden | 0.536 | 80508 |
| (_9_/_[number] | 0.531 | 89253 |
| the_war_on_terror | 0.531 | 47377 |