SimilarityRank
span 0.657 5900
time_span 0.652 97197
that_span 0.604 32542
over_a_period 0.566 10371
extend_over 0.541 66813
which_span 0.528 97251
period_of_time 0.494 20386
average_over 0.490 79999
time_frame 0.489 15001
time_period 0.489 11084
in_less_than_a 0.485 26473
blink_of_an_eye 0.482 54406
life_span 0.480 50447
about_[number]_year 0.479 29004
over 0.475 117
lapse_of 0.474 69025
length_of 0.473 10191
a_half 0.469 4836
within_a_period 0.468 78704
forty_year 0.466 69982
lifespan 0.466 26422
in_length 0.464 13703
short_than 0.461 72742
span_from 0.458 53564
pass_before 0.457 72970