Problem: Continue the following story.

We cannot find the cleaning rod dropped inside the pool because the
Here's how I want to continue it: rod is small.

Problem: Continue the following story.

Amy had to change their car coolant but not Christine because the car of
Here's how I want to continue it: Amy was overheating.

Problem: Continue the following story.

The doctor gave a clean bill of health to Amy but not Sarah because
Here's how I want to continue it:
Amy exercised regularly.