Input: Continue writing.

After the knee surgery he tried to use walker but switched to wheelchair, because the 
OPTIONS:
- walker was uncomfortable.
- wheelchair was uncomfortable.

Continued: walker was uncomfortable.


Input: Continue writing.

I think it's easier to be a student at private school rather than at public school as as the 
OPTIONS:
- private school has less people.
- public school has less people.

Continued: private school has less people.


Input: Continue writing.

Erin cook for Laura all the time, because 
OPTIONS:
- Erin is such a great food cooker.
- Laura is such a great food cooker.

Continued: Erin is such a great food cooker.


Input: Continue writing.

Bill got a new king sized mattress but had to throw out his old queen bed frame because the 
OPTIONS:
- mattress was smaller.
- bed frame was smaller.

Continued:
bed frame was smaller.