SimilarityRank
I_do_not_know 0.708 6146
I_be_not_familiar_with 0.685 95241
I_be_not_sure_about 0.672 80193
I_be_not_aware_of 0.662 49915
I_have_never_hear_of 0.643 54454
I_know_about 0.637 64012
I_have_no_idea 0.630 27343
I_do_not_remember 0.618 35346
I_do_not_know_that 0.610 38924
I_never_know 0.606 87759
I_do_not_understand 0.600 42140
I_do_not_know_what 0.598 21576
I_do_not_like 0.592 13734
do_not_know_about 0.591 58593
I_have_not_see 0.588 28718
I_miss 0.586 13517
I_never_see 0.585 87871
,_but_I_do_not 0.580 13965
I_forget 0.579 36903
I_have_not_use 0.578 89644
you_mention 0.577 22139
I_have_hear_of 0.576 48325
I_have_no_idea_what 0.575 52632
I_can_not_remember 0.574 46389
I_know 0.574 1811