A man with crutches passes behind a white truck.
The injured man is sitting in a wheelchair.
A man with crutches cannot be using wheelchair
exists e1 s1 x1 x2 x3.(behind(e1,x3) & n_truck(x3) & a_white(s1) & Theme(s1,x3) & Actor(e1,x1) & v_pass(e1) & with(x1,x2) & n_crutch(x2) & n_man(x1))
exists e1 s1 x1 x2.(n_man(x1) & a_injured(s1) & Theme(s1,x1) & in(e1,x2) & n_wheelchair(x2) & Actor(e1,x1) & v_sit(e1))