Please choose the correct ending to complete the given sentence: Philosophy and Religion: [header] How to properly slaughter a cow under the kosher method shechitah [title] Select a knife (called a chalif) of the appropriate size. [step] The length of the blade is twice the width of the animal's neck. [title] Thoroughly examine the animal prior to slaughter.

Ending1: [step] Make sure that the animal is sitting up straight and that the knife is in good shape. Grip the shank of the knife carefully, taking care not to gouge the animal. Ending2: [title] Restrain the animal so that the slaughtering can be done correctly and painlessly. [step] If the animal is injured during the restraining, it is no longer considered kosher. Ending3: [step] Most of its blood will come from the head. Importantly, it should come from the neck. Ending4: [step] Observe the behavior of the animal at various points in its life. An automatic kill means that during the shock of the animal being attacked, the animal starts back with its hog teeth, and afterward, the animal attacks whatever it is about to eat.

Answer format: ending1/ending2/ending3/ending4