A football player is running with a football.
The football player is holding a basketball.
The football player cannot be holding a football and a basketball simultaneously
exists e1 x1 x2 x3.(with(e1,x3) & n_football(x3) & Actor(e1,x1) & v_run(e1) & n_player(x1) & of(x1,x2) & n_football(x2))
exists e1 x1 x2 x3.(n_player(x1) & of(x1,x2) & n_football(x2) & Theme(e1,x3) & Actor(e1,x1) & v_hold(e1) & n_basketball(x3))