Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Get to know SF by bike!

By the time you get through riding all of these short to medium-length bike rides in and around the San Francisco, you will know more about The City than 95 percent of your neighbors. Clear, easy-to-follow directions and interesting descriptions of the sights along the way. I did one ride per weekend during grad school, and had an absolute blast. Only caveat is that it hasn't been updated in a while, so you may want to take a quick look on Google Earth to make sure no recent changes have taken place.