Teenagers congregate outside a brick building
Teenagers are hanging outside of a bungalow.
A bungalow is not always a brick building.
exists e1 x1 x2 x3.(outside(e1,x2) & n_building(x2) & of(x2,x3) & n_brick(x3) & Actor(e1,x1) & v_congregate(e1) & n_teenager(x1))
exists e1 x1 x2.(of(e1,x2) & n_bungalow(x2) & r_outside(e1) & Actor(e1,x1) & v_hang(e1) & n_teenager(x1))