_:vb50950207 . _:vb50950207 . _:vb50950207 "A disease of anatomical entity that is located_in kidney, ureter, bladder and urethra."^^ . _:vb50950207 . _:vb50950207 . _:vb50950207 . _:vb50950207 "url:http://en.wikipedia.org/wiki/Urinary_system"^^ .