user: Question: What's the latest original air date with more than 10 episodes and a DVD Region 2 release date of 23 april 2012?
Columns: ['Series Number', 'Number of Episodes', 'Original Air Date', 'DVD Region 2 release date', 'DVD Region 1 release date']
Types: ['real', 'real', 'real', 'text', 'text']
Sample row: [1.0, 6.0, 1973.0, '2 September 2002', 'TBA']
SQL:

assistant: SELECT MAX("Original Air Date") FROM "Table" WHERE "DVD Region 2 release date" = '23 april 2012' AND "Number of Episodes" > 10.0;