A man with headphones in, is sitting on a bus or train.
A man with a guitar takes a taxi.
bus or train is contradictory to taxi
exists e1 s1 x1 x2 x3 x4.(on(e1,x4) & (n_bus(x4) | n_train(x4)) & Actor(e1,x1) & v_sit(e1) & with(x1,x2) & Theme(s1,x3) & a_in(s1) & (x2 = x3) & n_headphone(x2) & n_man(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_take(e1) & n_taxi(x3) & with(x1,x2) & n_guitar(x2) & n_man(x1))