In this task the focus is on physical knowledge about the world. Given the provided goal task in the input, describe a process that would lead to the asked outcome. This process often involves physical motions with objects, such as moving them, arranging them in a certain way, mixing them, shaking them, etc. 
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Question: leather sheath

Answer: can form protective cover on sharp knife blades to prevent temporary injury


Question: how to make a clarifying shampoo

Answer: mix three tablespoons of baking soda into a pint of water. shake and pour over hair and wash.


Question: what to substitute sour cream with

Answer:
Use greek yogurt