Formulate questions about the information mentioned in a given passage.

Let me give you an example: context: A person is trying to roll an apple, a ball, a block, and a bottle.
The answer to this example can be: What is the person trying to do?
Here is why: This question can be directly answered from the context.

OK. solve this:
context: A person is trying to roll an apple, a ball, a microwave, and a can.
Answer:
What are the things that the person is trying to roll?