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. 

Purge fat from stew.
Put ice cubes in large spoon and move across soup surface.

What type of chainsaw should I use to cut down a very thick tree?
A gas powered chainsaw should be used to cut down a very thick tree as it has more power and can be used for longer at a single time than an electric powered chainsaw.

How do you trim yams?

Place the yam on a cutting board. Using a sharp knife, cut away approximately ¼ inch of each of the ends of the yam. Identify any woody bits on the yam and use a sharp paring knife to slice them off.