Person performing yoga by the ocean.
Person is playing ball.
A person can either only do yoga or play ball at the same time.
exists e1 x1 x2 x3.(n_ocean(x3) & ne_nam_person(x1) & by(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_yoga(x2))
exists e1 x1 x2.(ne_nam_person(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_ball(x2))