SimilarityRank
be_unclear 0.876 18231
not_clear 0.707 86587
remain_unclear_. 0.704 61353
be_unknown 0.692 8723
be_not_know 0.692 21842
it_be_not_clear 0.668 43210
be_uncertain 0.662 25526
remain_unknown_. 0.640 83257
it_be_unclear 0.639 96477
remain_unknown 0.637 95834
unclear 0.634 31853
remain_a_mystery 0.610 70041
be_ambiguous 0.609 58935
it_be_unknown 0.598 73475
we_do_not_know 0.579 21798
do_not_specify 0.578 99897
do_not_explain 0.573 94495
be_questionable 0.562 39845
it_be_not_clear_whether 0.554 72966
be_not_specify 0.550 72855
do_not_appear_to_be 0.536 39770
to_clarify 0.534 17380
nobody_know 0.533 74533
it_be_hard_to_say 0.532 62167
be_not_mention 0.530 39015