A girl smiles while three people ride past her on a motorcycle.
A girl is smiling.
A girl smiles means she is smiling.
exists e1 p1 x1.(exists e2 s1 x2 x3 x4.(on(e2,x4) & n_motorcycle(x4) & Theme(e2,x3) & Actor(e2,x2) & v_ride(e2) & n_her(x3) & a_past(s1) & Theme(s1,x3) & n_people(x2) & card_eq_3(x2)) & while(e1,p1) & Actor(e1,x1) & v_smile(e1) & n_girl(x1))
exists e1 x1.(Actor(e1,x1) & v_smile(e1) & n_girl(x1))