A squatting man is cooking on an open fire in the rain.
the man is a chef
Not all men are a chef.
exists e1 e2 s1 x1 x2 x3.(n_rain(x3) & on(e2,x2) & in(x2,x3) & n_fire(x2) & a_open(s1) & Theme(s1,x2) & Actor(e2,x1) & v_cook(e2) & n_man(x1) & Actor(e1,x1) & v_squat(e1))
exists p1 x1.(n_man(x1) & exists x2.((x1 = x2) & n_chef(x2)))