SimilarityRank
unanswered 0.638 95838
fundamental_question 0.581 82438
difficult_question 0.579 79064
many_question 0.578 23525
important_question 0.560 48294
question 0.547 193
unresolved 0.530 42643
such_question 0.528 34376
interesting_question 0.519 95419
question_about 0.516 5498
the_big_question 0.515 48706
critical_question 0.513 87652
doubt 0.510 3852
these_question 0.503 9512
question_raise_by 0.502 92791
key_question 0.501 36417
tough_question 0.499 73831
uncertainty_about 0.499 51277
raise_question 0.494 57879
enigma 0.483 62561
conundrum 0.478 44007
answer 0.477 484
those_question 0.471 26434
great_question 0.469 50002
hard_question 0.469 80547