Problem: How does the sentence end?

Tanya could calculate the market value on the house but Amy could not because 
Answer: Tanya was a mathematician.

Problem: How does the sentence end?

Jane wanted to fly a family in her plane to a vacation spot with their luggage but the 
Answer: plane was too small.

Problem: How does the sentence end?

Victoria was better at following a budget than Katrina for the reason that 
Answer: Victoria tended to spend money judiciously.

Problem: How does the sentence end?

The woman covered the carpet in the living room with a rug, because the 
Answer:
carpet was stained.