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. 

[EX Q]: How to sharpen a knife with a sharpening rod?
[EX A]: Hold the sharpening rod with your weaker hand and stroke the knife away from yourself with your dominant hand, alternating the sides of the blade

[EX Q]: To prevent water from growing bacteria, you can
[EX A]: Use a small amount of vinegar or bleach

[EX Q]: Knife
[EX A]:
Can be used to rip a Net