The girl is on the treadmill.
The girl is eating cereal.
The girl is either on the treadmill or eating.
exists p1 x1 x2.(n_treadmill(x2) & n_girl(x1) & on(x1,x2))
exists p1 x1.(n_girl(x1) & exists s1 x2.((x1 = x2) & n_cereal(x2) & a_eating(s1) & Theme(s1,x2)))