Problem: How does the sentence end?

The new deck wouldn't fit behind the house because the 
Answer: deck was just not long enough.

Problem: How does the sentence end?

You can use both flour and cornstarch to thicken soups, but the 
Answer: cornstarch is a less common kitchen ingredient.

Problem: How does the sentence end?

Geena began doing yoga on the mat instead of the carpet, because the texture of the 
Answer: carpet gave her less traction.

Problem: How does the sentence end?

Rebecca is not rich but Mary is very much so, and so 
Answer:
Rebecca goes back home to a hovel and not a mansion.