A kid is holding a rubber mallet.
Kid bouncing
One cannot be holding a rubber mallet and bouncing simultaneously
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_mallet(x2) & of(x2,x3) & n_rubber(x3) & n_kid(x1))
exists e1 x1.(ne_nam_kid(x1) & Actor(e1,x1) & v_bounce(e1))