there is a young girl on her cellphone while skating.
The girl is riding a bike.
Girl cannot riding a bike  while  while talking on cellphone.
exists e1 p1 x1.(while(p1,e1) & Actor(e1,x1) & v_skate(e1) & exists s1 x2 x3.((x1 = x2) & on(x2,x3) & n_cellphone(x3) & of(x3,x2) & n_female(x2) & n_girl(x2) & a_young(s1) & Theme(s1,x2)))
exists e1 x1 x2.(n_girl(x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2))