Problem: Erin was a slow learner while Christine was a quick learner, so 
OPTIONS:
- Erin was held back a grade.
- Christine was held back a grade.

My choice: Erin was held back a grade.
[Q]: How does the sentence end?

Although they were both beneficiaries, Benjamin got less than Dennis in the final settlement of the will; 
OPTIONS:
- Benjamin was never the favorite in the family.
- Dennis was never the favorite in the family.

[A]: Benjamin was never the favorite in the family.
QUES: Continue writing.

Samantha owned several horses while Cynthia owned hamsters, so 

OPTIONS:
- Samantha had a stable to keep them all in.
- Cynthia had a stable to keep them all in.
+++++++++
ANS: Samantha had a stable to keep them all in.
Problem: How does the sentence end?

After falling down the stairs, Kyle had a severe bone fracture so Leslie performed surgery and 
OPTIONS:
- Kyle was able to heal.
- Leslie was able to heal.
Answer: Kyle was able to heal.
sentence: Being a chemical engineer suited Derrick but not Randy because  OPTIONS:
- Derrick didn't have a very technical mind.
- Randy didn't have a very technical mind.
complete: Randy didn't have a very technical mind.
Input: Continue writing.

William swept up all the leaves while Ian sat on the porch relaxing, so 
OPTIONS:
- William was chill and relaxed.
- Ian was chill and relaxed.

Continued:
Ian was chill and relaxed.