user: Question: How many different descriptions are there for the flag that means Decimal Digit 2?
Columns: ['Flag Name', 'Transliteration', 'Meaning', 'Description', 'International Use']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1 единица', 'edinica', 'Decimal Digit 1', 'White beside blue vertical swallowtail bicolor.', 'ICS "Alpha"']
SQL:

assistant: SELECT COUNT("Description") FROM "Table" WHERE "Meaning" = 'Decimal Digit 2';