SimilarityRank
the_unique_challenge 0.701 90230
challenge_associate_with 0.678 61107
challenge_relate_to 0.677 80453
challenge_face 0.672 32972
various_challenge 0.665 99907
common_challenge 0.664 99524
specific_problem 0.661 57049
challenge 0.661 222
current_challenge 0.661 50315
these_challenge 0.659 16957
the_challenge_face 0.654 22143
challenge_face_by 0.648 66867
different_challenge 0.643 83598
the_challenge_face_by 0.626 42818
the_major_challenge 0.624 66525
challenge_they_face 0.623 44286
the_key_challenge 0.622 74955
many_challenge 0.616 34197
specific_issue 0.611 39698
major_challenge 0.607 94021
the_main_challenge 0.604 52376
future_challenge 0.585 41206
issue_face 0.585 32083
key_issue 0.583 15544
common_issue 0.583 90970