Catcher on the ground, runner making base.
People are playing basketball.
Basketball and a catcher implies different sports.
exists x1 x2 x3 x4 x5.(n_ground(x2) & a_topic(x1) & on(x1,x2) & rel(x2,x3) & n_base(x3) & of(x3,x5) & n_making(x5) & of(x3,x4) & n_runner(x4) & n_catcher(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_basketball(x2) & n_people(x1))