SimilarityRank
the_big_challenge 0.823 19695
great_challenge 0.768 59535
the_great_challenge 0.755 32862
major_challenge 0.728 94021
big_problem 0.696 39556
the_major_challenge 0.681 66525
the_main_challenge 0.672 52376
many_challenge 0.671 34197
another_challenge 0.648 48760
the_big_problem 0.628 25566
challenge 0.613 222
big_issue 0.600 68319
the_big_issue 0.596 32640
the_key_challenge 0.586 74955
major_problem 0.577 34279
challenge_face 0.576 32972
face_many_challenge 0.569 78198
the_main_problem 0.543 46787
challenge_associate_with 0.539 61107
that_we_face 0.537 59337
problem_face 0.535 83674
technical_challenge 0.530 52969
a_big_problem 0.529 88869
the_most_challenging 0.528 54484
new_challenge 0.525 18398