Problem: Continue the following story.

Ryan had gained some weight over the holidays but Ian hadn't, so 
OPTIONS:
- Ryan increased the amount of walking they did for exercise.
- Ian increased the amount of walking they did for exercise.
Here's how I want to continue it: Ryan increased the amount of walking they did for exercise.

Problem: Continue the following story.

Donald asked Kenneth for the password to the wireless router, because 
OPTIONS:
- Donald was the owner of the home.
- Kenneth was the owner of the home.
Here's how I want to continue it: Kenneth was the owner of the home.

Problem: Continue the following story.

The sand was filtered using the sift instead of the machine because the 
OPTIONS:
- sift was unwieldy to use.
- machine was unwieldy to use.
Here's how I want to continue it:
machine was unwieldy to use.