Question:
The guitar that I bought played better than the violin, because the

Answer:
Continue the sentence -- violin was very old.

Question:
The coin collection sold for more than the card collection as auction, because the

Answer:
Continue the sentence -- coin collection was rare.

Question:
Christine was better at writing fiction than Amy because

Answer:
Continue the sentence -- Christine had a more creative mind.

Question:
Emily had a lot more trouble sleeping than Felicia because

Answer:
Continue the sentence -- Emily has had insomnia for years.