user: Question: What is the average enrollment that has hot dogs as the mascot, with a year joined later than 1926?
Columns: ['School', 'Location', 'Mascot', '# / County', 'Enrollment', 'IHSAA Class /Football/Soccer', 'Year joined', 'Previous Conference', 'Year Left', 'Conference Joined']
Types: ['text', 'text', 'text', 'text', 'real', 'text', 'real', 'text', 'real', 'text']
Sample row: ['Arsenal Technical', 'Indianapolis', 'Titans', '49 Marion', 2398.0, '4A/6A/2A', 1926.0, 'Independents', 1960.0, 'Indianapolis']
SQL:

assistant: SELECT AVG("Enrollment") FROM "Table" WHERE "Mascot" = 'hot dogs' AND "Year joined" > 1926.0;