user: Question: What is the Release Date for Model Number C7 1.8?
Columns: ['Model Number', 'Frequency', 'L2-Cache', 'Front Side Bus', 'Multiplier', 'Voltage', 'Socket', 'Release Date']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['C7 1.0', '1000\u2009MHz', '128\u2009KiB', '400\u2009MT/s', '10×', '\u2009V', 'NanoBGA2', 'May 27, 2005']
SQL:

assistant: SELECT "Release Date" FROM "Table" WHERE "Model Number" = 'C7 1.8';