Input: Continue writing.

The cat liked playing with the ball of yarn but not the ball because the 
OPTIONS:
- yarn was more exciting.
- ball was more exciting.

Continued: yarn was more exciting.


Input: Continue writing.

Ryan made sure Nick kept his neck straight when they sing together because 
OPTIONS:
- Ryan had a neck problem before.
- Nick had a neck problem before.

Continued: Nick had a neck problem before.


Input: Continue writing.

Mary went shopping for a mattress last weekend without Rachel because 
OPTIONS:
- Mary didn't need a new one.
- Rachel didn't need a new one.

Continued: Rachel didn't need a new one.


Input: Continue writing.

Craig printed out a bunch of documents for Eric to sign, because 
OPTIONS:
- Craig was a client.
- Eric was a client.

Continued:
Eric was a client.