Predicate Consequent Reason
ultimate_madoka (329) kaname_madoka (1379) A specific version of the same character
underwater (1292) water (15224) Tag Discussion forum (1459), pages 67-68
unicorn (40) horse (270) A unicorn is a mythical type of horse
utawarerumono_itsuwari_no_kamen (60) utawarerumono (187) Parent copyright
verniy_(kancolle) (91) hibiki_(kancolle) (369) A specific version of the same character
violin (317) instrument (2620) Because instrument
vocaloid_china (298) vocaloid (20729) Subset of same copyright.
volleyball (85) sport (452)
waterfall (422) water (15224) By Suggestion.
watermelon (323) fruit (2977) watermelon is both a fruit and a berry (called a pepo) http://en.wikipedia.org/wiki/Watermelon
witch_hat (1193) hat (18458)
wolf (166) animal (12753) Because a wolf is an animal
yes!_precure_5 (21) precure (463) Series to Franchise
yes!_precure_5_gogo! (3) yes!_precure_5 (21) Sequel to prequel
yukata (1200) japanese_clothes (12630)
yuki_miku (302) hatsune_miku (13975) seasonal
z_gundam (1) mobile_suit_gundam (671) Series to franchise