1. 1920 Summer Olympics   Antwerp   Berlin   Sydney   Seoul   Hint Half-n-half Clue   2. 2012 Summer Olympics   Atlanta   St. Louis   Melbourne   London   Half-n-half Clue   3. 1900 Summer Olympics   Barcelona   Amsterdam   Moscow   Paris   Half-n-half Clue   4. 1956 Summer Olympics   St. Louis   Moscow   Melbourne   Munich   Half-n-half Clue   5. 1932 Summer Olympics   Barcelona   Los Angeles   Beijing   St. Louis   Half-n-half Clue   6. 2000 Summer Olympics   Sydney   Tokyo   Berlin   Montreal   Half-n-half Clue   7. 1972 Summer Olympics   St. Louis   Atlanta   Athens   Munich   Half-n-half Clue