Predicate Consequent Reason
ultimate_madoka (329) kaname_madoka (1380) A specific version of the same character
underwater (1315) water (15477) Tag Discussion forum (1459), pages 67-68
unicorn (41) horse (272) A unicorn is a mythical type of horse
utawarerumono_itsuwari_no_kamen (60) utawarerumono (187) Parent copyright
verniy_(kancolle) (91) hibiki_(kancolle) (370) A specific version of the same character
violin (323) instrument (2641) Because instrument
vocaloid_china (300) vocaloid (20891) Subset of same copyright.
volleyball (87) sport (465)
waterfall (428) water (15477) By Suggestion.
watermelon (324) fruit (3036) watermelon is both a fruit and a berry (called a pepo) http://en.wikipedia.org/wiki/Watermelon
witch_hat (1207) hat (18634)
wolf (169) animal (12927) Because a wolf is an animal
yes!_precure_5 (21) precure (465) Series to Franchise
yes!_precure_5_gogo! (3) yes!_precure_5 (21) Sequel to prequel
yukata (1216) japanese_clothes (12791)
yuki_miku (311) hatsune_miku (14118) seasonal
z_gundam (1) mobile_suit_gundam (675) Series to franchise