Pitcher in red uniform throwing a baseball.
Someone is throwing a ball.
Pitcher in red uniform throwing a baseball. which at the same time wouldn't be  Someone is throwing a ball.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_throw(e1) & n_baseball(x4) & (x2 = x3) & n_uniform(x2) & a_red(s1) & Theme(s1,x2) & n_pitcher(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_throw(e1) & n_ball(x2) & n_person(x1))