Two bicyclists ride down the street past people while talking.
Friends enjoy a sunny day riding bicycles.
We couldn't infer they were friends or that they were enjoying a sunny day.
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 e1 e2 s1 x1 x2 x3 x4.(Theme(e2,x2) & Actor(e2,x1) & v_enjoy(e2) & Theme(e1,x4) & Actor(e1,x3) & v_ride(e1) & n_bicycle(x4) & (x2 = x3) & n_day(x2) & a_sunny(s1) & Theme(s1,x2) & n_friend(x1))