A boy wearing green shorts is about to serve a volleyball.
A boy is reserving a volleyball
Being about to serve a volleyball does not mean the person is reserving the ball for their own use.
exists e1 p1 s1 s2 x1 x2 x3.(Topic(s2,p1) & Actor(s2,x1) & a_about(s2) & exists e2 x4.(Theme(e2,x4) & Actor(e2,x1) & v_serve(e2) & n_volleyball(x4)) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_shorts(x3) & a_green(s1) & Theme(s1,x3) & (x1 = x2) & n_boy(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_reserve(e1) & n_volleyball(x2) & n_boy(x1))