Predicate Consequent Reason
ultimate_madoka (329) kaname_madoka (1382) A specific version of the same character
underwater (1334) water (15782) Tag Discussion forum (1459), pages 67-68
unicorn (41) horse (273) A unicorn is a mythical type of horse
utawarerumono_itsuwari_no_kamen (60) utawarerumono (187) Parent copyright
verniy_(kancolle) (91) hibiki_(kancolle) (371) A specific version of the same character
violin (327) instrument (2662) Because instrument
vocaloid_china (301) vocaloid (20957) Subset of same copyright.
volleyball (88) sport (479)
waterfall (432) water (15782) By Suggestion.
watermelon (326) fruit (3093) watermelon is both a fruit and a berry (called a pepo) http://en.wikipedia.org/wiki/Watermelon
witch_hat (1216) hat (18845)
wolf (171) animal (13133) Because a wolf is an animal
yes!_precure_5 (21) precure (469) Series to Franchise
yes!_precure_5_gogo! (3) yes!_precure_5 (21) Sequel to prequel
yukata (1240) japanese_clothes (12950)
yuki_miku (314) hatsune_miku (14173) seasonal
z_gundam (1) mobile_suit_gundam (680) Series to franchise