A man holding a camera underwater.
There is a camera underwater.
There is a camera underwater because a man is holding it there.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_hold(e1) & n_underwater(x3) & of(x3,x4) & n_camera(x4) & (x1 = x2) & n_man(x1))
exists p1 x1 x2 x3.((x1 = x2) & n_underwater(x2) & of(x2,x3) & n_camera(x3))