user: Question: How many votes in Brooklyn were won by the candidate who won 321 votes in Manhattan?
Columns: ['1921', 'party', 'Manhattan', 'The Bronx', 'Brooklyn', 'Queens', 'Richmond [Staten Is.]', 'Total', '%']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['John Francis Hylan', 'Democratic', '261,452', '118,235', '260,143', '87,676', '22,741', 750247.0, '64.2%']
SQL:

assistant: SELECT "Brooklyn" FROM "Table" WHERE "Manhattan" = '321';