What's an example of a task that requires knowledge of physical objects to perform?
How can I remove permanent marker stains from carpet?

What's an example of a task that requires knowledge of physical objects to perform?
How do I prevent my mirror from developing black spots?

What's an example of a task that requires knowledge of physical objects to perform?
How to grow tomatoes in pots.

What's an example of a task that requires knowledge of physical objects to perform?
how to quickly clean a cutting board after peeling vegetables