input question: How can you tell if a letter is junk mail or not?

output answer: If it has no return address its probably a sales pitch.

input question: If you are struggling to make a lay-up in basketball

output answer: stop and practice each step separately: dribbling at speed, jumping towards the hoop without stopping, and placing the basketball.

input question: How to clean inside of toilet bowl

output answer:
Pour toilet cleaner on the sides of the inside of the bowl and scrub with a toilet brush.