A young adult is throwing a softball to home base.
A person throws a ball.
A young adult is a person.  Softball is a type of ball.
exists e1 s1 x1 x2 x3 x4.(to(e1,x3) & n_base(x3) & of(x3,x4) & n_home(x4) & Theme(e1,x2) & Actor(e1,x1) & v_throw(e1) & n_softball(x2) & n_adult(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_throw(e1) & n_ball(x2) & n_person(x1))