Three firemen are conversing next to a firetruck.
The firemen are chatting inside the firehouse.
The three firemen conversing are not necessarily inside the firehouse.
exists e1 x1 x2.(to(e1,x2) & n_firetruck(x2) & r_next(e1) & Actor(e1,x1) & v_converse(e1) & n_fireman(x1) & card_eq_3(x1))
exists e1 x1 x2.(n_firehouse(x2) & n_fireman(x1) & inside(e1,x2) & Actor(e1,x1) & v_chat(e1))