A man stands below a crowd.
A man is standing below a concert crowd.
Not all crowds are a concert crowd.
exists e1 x1 x2.(below(e1,x2) & n_crowd(x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists e1 x1 x2 x3.(below(e1,x2) & n_crowd(x2) & of(x2,x3) & n_concert(x3) & Actor(e1,x1) & v_stand(e1) & n_man(x1))