SimilarityRank
thirty_year_ago 0.827 57364
fifty_year_ago 0.782 58784
twenty_year_ago 0.730 66247
[number]_year_ago 0.672 3595
ten_year_ago 0.665 32649
in_the_1960 0.657 9794
a_decade_ago 0.656 23265
decade_ago 0.656 32413
a_century_ago 0.645 46539
in_the_1970 0.643 8581
in_the_1950 0.636 10960
two_decade_ago 0.634 95707
nearly_[number]_year_ago 0.632 48159
Ten_year_ago_, 0.624 77215
in_the_early_1970 0.622 30350
in_the_mid-1970 0.620 85270
in_the_early_1960 0.617 41720
five_year_ago 0.616 21349
almost_[number]_year_ago 0.612 51448
in_the_late_1960 0.610 43535
in_the_late_1970 0.609 36780
over_[number]_year_ago 0.608 22327
back_then 0.605 8288
some_[number]_year_ago 0.603 44893
more_than_[number]_year_ago 0.602 24310