user: Question: What is the lowest when Pohang Steelyard is the stadium?
Columns: ['Team', 'Stadium', 'Match played', 'Highest', 'Lowest', 'Average']
Types: ['text', 'text', 'text', 'real', 'real', 'real']
Sample row: ["Busan I'Park", 'Asiad Main Stadium', '14', 17577.0, 3998.0, 7221.0]
SQL:

assistant: SELECT "Lowest" FROM "Table" WHERE "Stadium" = 'Pohang Steelyard';