user: Question: What round had the opponent Lyon?
Columns: ['Round', 'Opposition', 'First leg', 'Second leg', 'Aggregate score']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1st', 'Lyon', '3–4 (a)', '3–0 (h)', '6–4']
SQL:

assistant: SELECT "Round" FROM "Table" WHERE "Opposition" = 'Lyon';