Problem: How does the next paragraph end?

How to serve and enjoy guinness
Choose the right glass.
Although it may seem that any glass will do, to enjoy a truly perfect glass of guinness you must use a tulip glass.
The shape of a tulip glass is perfect for allowing the nitrogen bubbles to circulate from the bottom and back up to the top.
A: Although any size will do, a 16 oz glass, otherwise known as a pint, is generally agreed upon as the classic size for the drink. Pour the drink into the glass at a 45 degree angle.

Problem: How does the next paragraph end?

How to choose an ergonomic office chair
Look for the ability to adjust the chair's height.
The height of your ergonomic chair should be fully adjustable. The chair's seat should be easy to move either upwards or downwards.
A: This adjustment will allow for people of different heights to comfortably sit in the chair. Make sure you can adjust how high or low the the seat is before purchasing your chair.

Problem: How does the next paragraph end?

How to house train a pig
Pick a large enough litter box.
Like cats, pigs can be litter box trained. However, the box must be big enough so that the pig can turn around fully.
A: That way, the pig will be able to use the bathroom comfortably. For smaller pigs, you can use plastic storage boxes or a regular cat litter box with low sides.

Problem: How does the next paragraph end?

A man then begins to ride his skateboard from the top of the roof down an inclined road. the man
A:
then begins moving and skateboarding throughout the neighborhood and interacting with the people.