user: Question: What platform is nds4droid on for the Nintendo DS with a license of GPL v2?
Columns: ['Name', 'Current version', 'System', 'Platform', 'License']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['dasShiny', 'git-c2ed70905e', 'Nintendo DS', 'Windows , OS X , GNU/Linux', 'GPL v3']
SQL:

assistant: SELECT "Platform" FROM "Table" WHERE "System" = 'Nintendo DS' AND "License" = 'GPL v2' AND "Name" = 'nds4droid';