user: Question: How many  dvd  titled "Series 5" were released having a release date or a non available date in region 2?
Columns: ['DVD Title', 'No. of Discs', 'Year', 'No. of Episodes', 'Region 1', 'Region 2', 'Region 4']
Types: ['text', 'real', 'text', 'real', 'text', 'text', 'text']
Sample row: ['Series 1', 4.0, '1978', 13.0, '14 May 2002', 'N/A', '2 January 2013']
SQL:

assistant: SELECT COUNT("Region 2") FROM "Table" WHERE "DVD Title" = 'Series 5';