| Similarity | Rank | |
|---|---|---|
| be_unknown | 0.826 | 8723 |
| remain_unknown_. | 0.780 | 83257 |
| be_not_know | 0.772 | 21842 |
| remain_a_mystery | 0.764 | 70041 |
| be_unclear | 0.689 | 18231 |
| remain_unclear_. | 0.665 | 61353 |
| be_a_mystery | 0.644 | 49852 |
| be_not_clear | 0.637 | 25766 |
| be_uncertain | 0.628 | 25526 |
| we_do_not_know | 0.618 | 21798 |
| no_one_know | 0.605 | 42689 |
| it_be_unknown | 0.571 | 73475 |
| be_already_know | 0.546 | 79443 |
| nobody_know | 0.536 | 74533 |
| not_know | 0.523 | 17980 |
| know_about | 0.523 | 5185 |
| it_be_unclear | 0.523 | 96477 |
| be_unaware_of | 0.513 | 36659 |
| be_not_know_to | 0.512 | 78162 |
| unknown | 0.512 | 3389 |
| do_not_reveal | 0.506 | 84708 |
| little_know | 0.505 | 66255 |
| a_mystery | 0.500 | 26924 |
| do_not_know | 0.492 | 10490 |
| be_not_aware_of | 0.490 | 45005 |