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. 
--------
Question: How do you vacuum detritus off the surface of the sandbed in an aquarium?

Answer: The easiest way to clean detritus from the sand in an aquarium is to use a long, flexible piece of plastic tubing. Start a syphon, and use the tubing to vacuum the bottom, syphoning the dirty water and detritus into a bucket to be disposed of.


Question: The best nail to use at every crossing of a roofing job

Answer: The use of a 160 mil nail at every crossing is the best.


Question: To find the center of a block of wood, you can

Answer:
Make measured lines at the corners facing inwards