Task: Question Generation
Input (English): Passage: Ten baseball teams other than the Otters have played at Bosse Field. Some of the most famous are the Evansville Triplets (1970–84), Evansville Braves (1946–57), Evas/Pocketeers/Hubs (1919–1931) and the Evansville River Rats (1914–15). The Evansville River Rats had played in Evansville previously from (1903–1910) and (1901–1902). The Evansville Triplets won the American Association (20th century) titles in 1972, 1975, and 1979. The Evansville River Rats won the Central League (baseball) title in 1908 and 1915. The Evansville Braves won the Three-I League title in 1946, 1948, 1956, and 1957.
Output (English): How many years apart were the Central League (baseball) titles won by the Evansville River Rats?