Story needs to be completed:
Nelson is a much bigger person than Samuel, so

My choice:
Samuel wants a to buy a smaller car from the dealership.

Story needs to be completed:
Dennis has more responsibilities than Joseph because

My choice:
Dennis has six kids still living at home.

Story needs to be completed:
Kyle was more reluctant than Steven to try eating chia seeds, because

My choice:
Steven was an adventurous eater.

Story needs to be completed:
The skin of Benjamin was covered in tattoos unlike Brian because

My choice:
Benjamin loved body art and design.