SimilarityRank
way_back_in_[number] 0.554 51628
some_year_ago 0.547 24729
in_the_late_1990 0.543 26724
in_the_mid-1990 0.535 42919
date_back_to_[number] 0.527 25557
very_recently 0.524 60861
in_the_early_1990 0.523 17920
several_year_ago 0.515 13891
in_the_early_1980 0.513 25476
in_the_1990 0.511 8453
as_far_back_as 0.508 81634
more_than_[number]_year_ago 0.508 24310
some_[number]_year_ago 0.508 44893
a_few_year_ago 0.507 7726
in_the_late_1950 0.507 67077
in_the_early_1970 0.506 30350
many_year_ago 0.506 15620
in_the_late_1960 0.506 43535
in_the_1940 0.505 24811
in_the_early_2000 0.505 43568
in_the_1970 0.504 8581
more_than_a_decade_ago 0.500 83759
more_recently 0.499 10933
in_the_mid-1970 0.498 85270
in_the_early_1950 0.498 63293