user: Question: Name the average year for Janaprakal Chandruang
Columns: ['Year', 'Literature', 'Music', 'Film', 'Performing arts']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2004.0, 'Chart Korbjitti', 'Danu Huntrakul', 'Pen-Ek Ratanaruang', 'Pradit Prasarttong']
SQL:

assistant: SELECT AVG("Year") FROM "Table" WHERE "Performing arts" = 'Janaprakal Chandruang';