Two bicyclists ride down the street past people while talking.
Two people talk while riding bikes.
We couldn't infer there was talk between them,
exists e2 e1 s1 x1 x2 x3.(n_people(x2) & a_past(s1) & Theme(s1,x2) & of(x2,x3) & n_street(x3) & while(e1,e2) & Actor(e2,x1) & v_talk(e2) & down(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bicyclist(x1) & card_eq_2(x1))
exists e2 e1 x1 x2.(while(e1,e2) & Theme(e2,x2) & Actor(e2,x1) & v_ride(e2) & n_bike(x2) & Actor(e1,x1) & v_talk(e1) & n_people(x1) & card_eq_2(x1))