user: Question: Which Line has a Platform of 3?
Columns: ['Stop no.', 'Platform', 'Line', 'Stopping pattern', 'Destination']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['[2777] McIver Station platforms', '[2777] McIver Station platforms', '[2777] McIver Station platforms', '[2777] McIver Station platforms', '[2777] McIver Station platforms']
SQL:

assistant: SELECT "Line" FROM "Table" WHERE "Platform" = '3';