A man in a green jacket is working on his tire.
a man changing a flat tire
There are many reasons to work on a tire, not just because it is flat.
exists e1 s1 x1 x2 x3.(on(e1,x3) & n_tire(x3) & of(x3,x1) & n_male(x1) & Actor(e1,x1) & v_work(e1) & in(x1,x2) & n_jacket(x2) & a_green(s1) & Theme(s1,x2) & n_man(x1))
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_change(e1) & n_tire(x3) & a_flat(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1))