Question: Where was arena  above North Station which is now a hub for MBTA Commuter Rail and Amtrak trains.and was where the 'final four' games of the 1984 ECAC Hockey Men's Ice Hockey Tournament played located?
{'answer': 'Boston, Massachusetts', 'supporting_facts': [["1984 ECAC Hockey Men's Ice Hockey Tournament", 0], ["1984 ECAC Hockey Men's Ice Hockey Tournament", 2], ['Boston Garden', 2]]}