The man is posing for a picture in the desert wearing a green shirt and hat, and holding a metal detector.
the man is a model
Not every person with posing for picture is model
exists e2 e3 e1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(n_desert(x3) & n_man(x1) & for(e1,e3) & Theme(e3,x7) & Actor(e3,x1) & v_hold(e3) & n_detector(x7) & of(x7,x8) & n_metal(x8) & for(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_wear(e2) & n_hat(x6) & n_shirt(x5) & a_green(s1) & Theme(s1,x5) & subset_of(x6,x4) & subset_of(x5,x4) & for(e1,x2) & in(x2,x3) & n_picture(x2) & Actor(e1,x1) & v_pose(e1))
exists p1 x1.(n_man(x1) & exists x2.((x1 = x2) & n_model(x2)))