Two motorcycle cops are sitting in the street talking.
Two cops are talking.
Two Cops are talking is mentioned in both sentences
exists e1 e2 x1 x2 x3.(n_street(x3) & for(e1,e2) & Actor(e2,x1) & v_talking(e2) & in(e1,x3) & Actor(e1,x1) & v_sit(e1) & n_cop(x1) & of(x1,x2) & n_motorcycle(x2) & card_eq_2(x1))
exists e1 x1.(Actor(e1,x1) & v_talk(e1) & n_cop(x1) & card_eq_2(x1))