user: Question: What year was the team Club of Atlético de San Juan FC who plays at Hiram Bithorn Stadium founded.
Columns: ['Club', 'Home city', 'Stadium', 'Founded', 'Seasons in PRSL']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['Academia Quintana FC', 'San Juan', 'Hiram Bithorn Stadium', 1969.0, '2008, 2009']
SQL:

assistant: SELECT "Founded" FROM "Table" WHERE "Stadium" = 'Hiram Bithorn Stadium' AND "Club" = 'Atlético de San Juan FC';