Query: The division winners met in what kind of series to advance to the World Series?
Context: In 1984, each league had two divisions, East and West. The divisional winners met in a best-of-5 series to advance to the World Series, in a "2–3" format, first two games were played at the home of the team who did not have home field advantage. Then the last three games were played at the home of the team, with home field advantage.