four people talking in a presentation room.
Four people talk to one another inside a conference room at work.
People who talk to one another are talking and if they are in a presentation room it implies they are inside a conference room.
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x3) & n_room(x3) & of(x3,x4) & n_presentation(x4) & Actor(e1,x2) & v_talk(e1) & (x1 = x2) & n_people(x1) & card_eq_4(x1))
exists e1 s1 x1 x2 x3 x4 x5.(inside(e1,x3) & at(x3,x5) & n_work(x5) & n_room(x3) & of(x3,x4) & n_conference(x4) & to(e1,x2) & n_thing(x2) & card_eq_1(x2) & a_another(s1) & Theme(s1,x2) & Actor(e1,x1) & v_talk(e1) & n_people(x1) & card_eq_4(x1))