A man with a blue hat and a cane is sitting on a curb.
A hatless mam sitting on a curb.
a man with a hat is contradictory to a hatless mam
exists e1 s1 x1 x2 x3 x4 x5.(on(e1,x5) & n_curb(x5) & Actor(e1,x1) & v_sit(e1) & with(x1,x2) & subset_of(x4,x2) & n_cane(x4) & subset_of(x3,x2) & n_hat(x3) & a_blue(s1) & Theme(s1,x3) & n_man(x1))
exists e1 s1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_curb(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_mam(x1) & a_hatless(s1) & Theme(s1,x1))