Kids running in the field.
Kids play ice hockey.
Kids can't be running and playing ice hockey at the same time.
exists e1 x1 x2 x3.(n_field(x3) & a_topic(x1) & in(e1,x3) & Actor(e1,x2) & v_run(e1) & (x1 = x2) & n_kid(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_hockey(x2) & of(x2,x3) & n_ice(x3) & n_kid(x1))