A man stands outside his home by some yellow boxes.
Nobody is standing
There cannot be a man and also be nobody.
exists e1 s1 x1 x2 x3.(outside(e1,x2) & by(x2,x3) & n_box(x3) & a_yellow(s1) & Theme(s1,x3) & n_home(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
-exists e1 x1.(Actor(e1,x1) & v_stand(e1) & n_person(x1))