user: Question: Which Opponent has a Series of Bruins lead 2–1?
Columns: ['Game', 'Date', 'Opponent', 'Score', 'Series']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'May 2', '@ Boston Bruins', '2–3', 'Bruins lead 1–0']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Series" = 'Bruins lead 2–1';