(Mishnah): If it trampled on a Kli and broke it...

(R. Yirmeyah): [I know that in the victim's Reshus,] if it trampled on a flask full of oil, for the flask it pays full damage, and for the oil it pays half damage [like the law of pebbles];

If a board was resting and glass was on it, and it trampled on the board and the glass broke, for the board it pays full damage, and for the glass it pays half damage.

If there were two boards, one on top of the other, and it trampled on the top one and they broke, for the top it pays full damage, and for the bottom half damage.

Question (R. Yirmeyah): If a board was resting in Reshus ha'Rabim, and it trampled on it and strewed it, and it went and broke in Reshus ha'Yachid, do you follow where it trampled, or where it broke?

If you follow where it trampled, he is exempt. If you follow where it broke, he is liable.