SimilarityRank
I_be_not_sure 0.812 10313
I_have_no_idea 0.784 27343
I_do_not_know_that 0.750 38924
I_do_not_remember 0.745 35346
I_can_not_say 0.740 50257
I_can_not_remember 0.737 46389
I_never_know 0.734 87759
I_do_not_know_what 0.729 21576
I_do_not_understand 0.713 42140
I_do_not_know_about 0.708 48476
I_know 0.701 1811
I_do_not_recall 0.693 80405
I_have_no_idea_what 0.687 52632
"_I_do_not_know 0.684 30599
I_do_not_care 0.683 53361
we_do_not_know 0.682 21798
I_be_not_aware_of 0.681 49915
I_be_not_sure_about 0.679 80193
but_I_know 0.673 30325
I_be_not_familiar_with 0.672 95241
but_I_be_not_sure 0.672 25639
nobody_know 0.662 74533
no_one_know 0.657 42689
not_sure 0.648 34196
it_be_hard_to_say 0.648 62167