Question: What is the date of the first game played by the American professional basketball team based in Massachusetts?
Sentence (from "2017–18 NBA season"): The regular season will begin on October 17, 2017, earlier than previous seasons to reduce the number of "back-to-back" games teams are scheduled to play, with the 2017 runners-up Cleveland Cavaliers hosting a game against the Boston Celtics at Quicken Loans Arena in Cleveland, Ohio.
Relevant evidence: Yes