A man walking in front of a building with graffiti on it.
A group of children walk in front of a building.
Either a man or children can walk in front of a building with graffiti on it.
exists x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x3) & on(x3,x1) & n_thing(x1) & of(x3,x4) & with(x4,x5) & n_graffitus(x5) & n_building(x4) & n_front(x3) & n_walking(x1) & of(x1,x2) & n_man(x2))
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & of(x1,x2) & in(e1,x4) & of(x4,x5) & n_building(x5) & n_front(x4) & Theme(e1,x3) & v_walk(e1) & (x2 = x3) & n_child(x2) & n_group(x1))