A crowd is assembled in a street.
A man is sitting in the street.
A crowd implies more than just a man.
exists e1 x1 x2.(in(e1,x2) & n_street(x2) & Theme(e1,x1) & v_assemble(e1) & n_crowd(x1))
exists e1 x1 x2.(n_street(x2) & in(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))