What's an example of a task that requires knowledge of physical objects to perform?
Keep a birdbath filled with water.

What's an example of a task that requires knowledge of physical objects to perform?
rags

What's an example of a task that requires knowledge of physical objects to perform?
how to keep fish from sticking to the grill

What's an example of a task that requires knowledge of physical objects to perform?
clean caked on food in the oven