A large crowd standing in front of a very large painting.
A crowd is looking at a painting.
Just because a crowd is standing in front of a painting does not mean they are looking at the painting.
exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & in(x1,x3) & of(x3,x4) & n_painting(x4) & a_large(s2) & Theme(s2,x4) & r_very(x4) & n_front(x3) & n_standing(x1) & of(x1,x2) & n_crowd(x2) & a_large(s1) & Theme(s1,x1))
exists e1 x1 x2.(at(e1,x2) & n_painting(x2) & Actor(e1,x1) & v_look(e1) & n_crowd(x1))