I'll give you a question, please answer with step-by-step reasoning process. It was the first time they had met their new niece, it was good to have everybody together at the annual what?\nOptions:\n- brother's house\n- family picture book\n- family tree\n- family reunion\n- book

User
One can meet their family members at family reunion. Family reunion are annual events.
The answer: family reunion.
Assistant