The cheerleaders toss their fellow member in the air.
The cheerleaders are rolling on the ground.
The cheerleaders cannot be tossing and rolling on the ground at the same time.
exists e1 x1 x2 x3 x4.(n_air(x4) & n_member(x2) & of(x2,x3) & n_fellow(x3) & of(x2,x1) & n_thing(x1) & n_cheerleader(x1) & in(e1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_toss(e1))
exists e1 x1 x2.(n_ground(x2) & n_cheerleader(x1) & on(e1,x2) & Actor(e1,x1) & v_roll(e1))