Simplify the following text for a Grade 3 native English-speaking person.
Original: The two teams were meeting in a World Series for the fifth time in nine years , with the Yankees having won in 1947 , 1949 , 1952 and 1953 .
Simplified: The two teams were meeting in a World Series for the fifth time in nine years . The Yankees had won in 1947 , 1949 , 1952 and 1953 .