A man is waist deep in a river casting a net.
The man is fishing.
We don't know that the man is fishing.
exists p1 x1.(exists e1 s1 x2 x3 x4 x5.((x1 = x2) & in(x2,x3) & Theme(e1,x5) & Actor(e1,x4) & v_cast(e1) & n_net(x5) & (x3 = x4) & n_river(x3) & n_deep(x2) & a_waist(s1) & Theme(s1,x2)) & n_man(x1))
exists p1 x1.(n_man(x1) & exists x2.((x1 = x2) & n_fishing(x2)))