Two girls enjoy themselves on a swing ride.
The girls have fun on the swings.
To enjoy themselves is to have fun. A swing ride is on the swings.
exists e1 x1 x2 x3 x4.(n_group(x2) & on(e1,x3) & n_ride(x3) & of(x3,x4) & n_swing(x4) & Theme(e1,x2) & Actor(e1,x1) & v_enjoy(e1) & n_girl(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_swing(x3) & n_girl(x1) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_fun(x2))