Problem: How does the next paragraph end?

How to clean vinyl windows 
Rinse off dirt and debris with clean water. 
Vinyl windows can be easily scratched and discolored, so caution is needed when cleaning them. Use fresh, clean water to rinse off any loose particles and dirt from the surface by gently pouring water from a pitcher or wringing it out of a clean wet rag.
A: Avoid wiping debris-covered windows without rinsing them first. To avoid scratching, you should also remove any rings, bracelets and watches you're wearing before you begin.

Problem: How does the next paragraph end?

How to take legal action when assaulted by a retail worker 
Call the police. 
Either you or a witness may want to call the police immediately. If you believe you are in immediate danger of continued assault, call 911.
A: Otherwise, find a non-emergency number for the nearest precinct. If you're injured, you may want to seek medical treatment before you report the incident to the police, unless the injuries are minor.

Problem: How does the next paragraph end?

How to do inclined sit ups 
Find an incline bench. 
This exercise will work best if you have a support bar, or foot brace, under which to hook your feet as well. 
Set the decline angle.
A: You should start with an angle between 30 and 45 degrees. The higher the angle, the harder the sit ups will be.

Problem: How does the next paragraph end?

A young man sits a piano locate on a sidewalk. the man
A:
plays the piano as a crowd watches.