Instruct: Classify Amazon reviews into positive or negative sentiment
Query: For anyone who has ever left their heart in San Francisco

This is for anyone who has ever fallen in love with this wonderful city, that is any who has ever, however briefly, been there.The format is, as it is for all the "Then and Now" series to show vintage photographs paired with modern shots of the same view. The captions describe the scenes, giving short historical backgrounds. Anyone who has ever spent any time in the city will recognize some of the modern views and will probably find themselves interested in the vintage shots giving the history of the scene. Those who are planning a return visit just might want to slip this slim book into their luggage to take sightseeing. It also just might make a welcome reference for anyone reading about the old days in the City or watching an old film set there.