user: Question: What is the year when they did not qualify for the playoff and the Regular Season shows as 10th?
Columns: ['Year', 'Division', 'League', 'Regular Season', 'Playoffs', 'Open Cup']
Types: ['real', 'real', 'text', 'text', 'text', 'text']
Sample row: [2008.0, 3.0, 'USL Second Division', '10th', 'Did not qualify', '2nd Round']
SQL:

assistant: SELECT "Year" FROM "Table" WHERE "Playoffs" = 'did not qualify' AND "Regular Season" = '10th';