Goal and options: how do you use a walker?
output answer: push it in front of you and lean on it with each step you take.

Goal and options: Prevent books from falling off bookshelf
output answer: Place bookends at the ends of the last books on the shelf

Goal and options: To layer the shepards pie
output answer:
place the meat mixture in the bottom of the pan and them smear the mash potatoes mixture on top smoothing out any roughly parts