You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
Formulate questions about the information mentioned in a given passage.

context: A person is trying to roll an apple, a ball, a block, and a bottle.
Solution: What is the person trying to do?
Why? This question can be directly answered from the context.

New input: context: A person is trying to stack plates, lamps, flowers, and balls.
Solution:
What are the things that the person is trying to stack?