user: Question: Who is the opponent on May 7?
Columns: ['Date', 'Opponent', 'Score', 'Loss', 'Save']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['May 1', 'Royals', '6–5', 'Grimsley (1–2)', 'Lyon (2)']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Date" = 'May 7';