user: Question: What is the listed date of the Warren pony truss bridge that was built in 1925?
Columns: ['Name', 'Built', 'Listed', 'Location', 'County', 'Type']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Blackburn Point Bridge', '1925', 'March 29, 2001', 'Osprey', 'Sarasota', 'Warren pony truss']
SQL:

assistant: SELECT "Listed" FROM "Table" WHERE "Built" = '1925' AND "Type" = 'Warren pony truss';