who is associated with the musical artists from mika and melanie fiona ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_associatedMusicalArtist dbr_Mika_ attr_open singer attr_close sep_dot var_uri dbo_associatedMusicalArtist dbr_Melanie_Fiona sep_dot var_uri a dbo_MusicalArtist brack_close