Four women are performing a synchronized swimming routine.
The four women are swimming the 400 meter butterfly.
Swimming and performing are different.
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_routine(x2) & of(x2,x3) & n_swimming(x3) & a_synchronized(s1) & Theme(s1,x2) & n_woman(x1) & card_eq_4(x1))
exists e1 x1 x2 x3.(n_butterfly(x2) & of(x2,x3) & n_meter(x3) & card_eq_400(x2) & n_woman(x1) & card_eq_4(x1) & Theme(e1,x2) & Actor(e1,x1) & v_swim(e1))