user: Question: Tell me the average size for minor third
Columns: ['interval name', 'size (steps)', 'size (cents)', 'just ratio', 'just (cents)', 'error']
Types: ['text', 'real', 'real', 'text', 'real', 'text']
Sample row: ['perfect fifth', 20.0, 705.88, '3:2', 701.95, '+3.93']
SQL:

assistant: SELECT AVG("size (steps)") FROM "Table" WHERE "interval name" = 'minor third';