SimilarityRank
the_key_challenge 0.798 74955
the_main_challenge 0.792 52376
the_great_challenge 0.769 32862
major_challenge 0.766 94021
the_big_challenge 0.759 19695
big_challenge 0.681 46944
great_challenge 0.673 59535
many_challenge 0.662 34197
current_challenge 0.654 50315
the_main_problem 0.647 46787
challenge_face 0.647 32972
challenge_associate_with 0.643 61107
major_problem 0.634 34279
another_challenge 0.628 48760
challenge_relate_to 0.624 80453
specific_challenge 0.624 92340
the_challenge_face 0.614 22143
common_challenge 0.611 99524
the_most_important_issue 0.607 75837
various_challenge 0.606 99907
the_big_problem 0.603 25566
challenge 0.603 222
these_challenge 0.597 16957
key_issue 0.596 15544
the_main_issue 0.593 33447