user: Question: Who was the winner of the XII Spring Trophy race with BRM as the constructor?
Columns: ['Race Name', 'Circuit', 'Date', 'Winning driver', 'Constructor', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['XIV Argentine Grand Prix', 'Buenos Aires', '24 January', 'Chris Amon', 'Matra', 'Report']
SQL:

assistant: SELECT "Winning driver" FROM "Table" WHERE "Constructor" = 'BRM' AND "Race Name" = 'XII Spring Trophy';