Combine these three sentences: "She had a book in her hand. It was old and outdated. She threw it away."
She had an old and outdated book in her hand, which she ultimately threw away.
Complete the following task based on the instruction and optional input provided.### Instruction:
Combine these three sentences: "She had a book in her hand. It was old and outdated. She threw it away."

### Output:
She had an old and outdated book in her hand, which she ultimately threw away.