The man in the white shirt is sitting on a rock with a pole in front of him.
The man is fishing
We have no idea if the man is fishing, he could be doing anything. Just because he has a pole, doesn't mean it is a fishing pole.
exists e1 s1 x1 x2 x3 x4 x5.(n_male(x1) & n_shirt(x2) & a_white(s1) & Theme(s1,x2) & n_man(x1) & with(e1,x4) & in(x4,x5) & of(x5,x1) & n_front(x5) & n_pole(x4) & on(e1,x3) & n_rock(x3) & Actor(e1,x1) & v_sit(e1) & in(x1,x2))
exists p1 x1.(n_man(x1) & exists x2.((x1 = x2) & n_fishing(x2)))