Combine the following pairs of sentences by changing the adjective to a noun.
1. He was honest. The Principal commended him at the assembly.
2. Rajesh is a very amiable person. It has endeared him to his colleagues.
3. The actor was famous. It got him many endorsements.
4. The young businessman was extravagant. It led to his downfall.
5. James was silent during the enquiry. It did not help the police in bringing the culprit to book.