Three firemen are conversing next to a firetruck.
There are firemen talking.
Conversing is communication that does not always refer to talking.
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 p1 x1 e1 x2 x3.((x1 = x2) & Actor(e1,x3) & v_talk(e1) & (x2 = x3) & n_fireman(x2))