Two men are sitting by themselves in a cafe.
Two men are sitting at a cafe where a music event is scheduled to begin in two hours.
Not all cafes have a music event.
exists e1 x1 x2 x3.(n_group(x2) & in(e1,x3) & n_cafe(x3) & by(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_2(x1))
exists e1 p1 x1 x2.(at(e1,x2) & exists e2 p2 x3 x4.(Recipient(e2,p2) & Topic(e2,x3) & v_schedule(e2) & exists e3 x5.(in(e3,x5) & n_hour(x5) & card_eq_2(x5) & Actor(e3,x3) & v_begin(e3)) & n_event(x3) & of(x3,x4) & n_music(x4)) & where(x2,p1) & n_cafe(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_2(x1))