A man is bowling at the bowling alley.
A person rolls a ball.
A man is a person.    Bowling consists of rolling a ball.
exists e1 x1 x2 x3.(n_alley(x2) & of(x2,x3) & n_bowling(x3) & at(e1,x2) & Actor(e1,x1) & v_bowl(e1) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_roll(e1) & n_ball(x2) & n_person(x1))