What's an example of a task that requires knowledge of physical objects to perform?
how do you clean the toilet?

What's an example of a task that requires knowledge of physical objects to perform?
What can be turned into virtually free charcoal pencils in a fire?

What's an example of a task that requires knowledge of physical objects to perform?
make an all-purpose cleaner

What's an example of a task that requires knowledge of physical objects to perform?
How to make a turkey sandwich.