A man wearing a jersey with the number 13 on it is ready to bat at a ball while people in the stands look on.
Nobody is wearing a jersey
If nobody is wearing a jersey, someone wouldn't be wearing a jersey.
exists e1 p1 s1 x1 x2 x3 x4 x7.(n_stand(x7) & n_number(x4) & n_date(x4) & a_date_day_13(x4) & a_date_day_13(x4) & Topic(s1,p1) & Actor(s1,x1) & a_ready(s1) & exists e2 p2 x5.(exists e3 p3 x6.(exists s2.(Theme(s2,x6) & a_on(s2)) & Topic(e3,p3) & Actor(e3,x6) & v_look(e3) & in(x6,x7) & n_people(x6)) & while(e2,p2) & at(e2,x5) & n_ball(x5) & Actor(e2,x1) & v_bat(e2)) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & with(x3,x4) & on(x4,x1) & n_thing(x1) & n_jersey(x3) & (x1 = x2) & n_man(x1))
-exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_jersey(x2) & n_person(x1))