Problem: How does the sentence end?

Zelda could throw the javelin further than the shot put, because the 
Answer: javelin was much lighter.

Problem: How does the sentence end?

Samuel was unable to cook anything unlike Joel, since 
Answer: Samuel was unskilled in the kitchen.

Problem: How does the sentence end?

Neil was able to buy the appliances cheaper than Aaron because 
Answer: Neil had a coupon.

Problem: How does the sentence end?

Carrie asked a lot of demands from Rachel since 
Answer:
Carrie was pregnant and couldn't move.