| Similarity | Rank | |
|---|---|---|
| for_thousand_of_year | 0.741 | 26866 |
| century_ago | 0.731 | 67706 |
| in_ancient_time | 0.704 | 48941 |
| thousand_of_year | 0.700 | 70681 |
| for_millennium | 0.672 | 62319 |
| around_[number]_year_ago | 0.667 | 99750 |
| our_ancestor | 0.654 | 28856 |
| some_[number]_year_ago | 0.638 | 44893 |
| ancient_culture | 0.637 | 86296 |
| ancient | 0.630 | 4287 |
| an_ancient | 0.629 | 16341 |
| million_of_year | 0.619 | 47068 |
| [number]_million_year_ago | 0.611 | 80067 |
| for_hundred_of_year | 0.607 | 43379 |
| about_[number]_year_ago | 0.601 | 22341 |
| ancient_time | 0.598 | 91668 |
| since_ancient_time | 0.598 | 92444 |
| over_[number]_year_ago | 0.597 | 22327 |
| ancient_Egyptian | 0.591 | 58042 |
| for_many_century | 0.588 | 87438 |
| [number]_B.C. | 0.587 | 81295 |
| [number]_BC | 0.580 | 34516 |
| long_ago | 0.580 | 11040 |
| [number]_year_ago | 0.578 | 3595 |
| in_[number]_BC | 0.577 | 52868 |