Definition: You will be given a review about a book, an item, a place or a movie. After that, a question is given that you should answer using a certain span of the review. Your answer should be from the review itself and should not contain extra words, and should not be a combination of different spans. If there's no direct answer to the question, answer with a part of the text that is the most relevant to the question. See the examples for clarification.
Input: review: decided to spend a weekend in san francisco so we booked a room at the sheraton fishermans wharf, it is a very nice property located within walking distance to the waterfront and cable car stops. the room was very large and the bed was excellent, great linens and very comfortable to sleep in. we booked on priceline and got a very good rate so all in all a very postive experience. one warning though valet parking is very expensive $45 a day, there is a parking garage across the street, i would suggest using that and paying half as much as the valet service.
question: What is the most expensive valet?
Output:
valet parking is very expensive $ 45 a day