user: Question: What is the highest ranked player who opposed Westmeath?
Columns: ['Rank', 'Player', 'County', 'Tally', 'Total', 'Opposition']
Types: ['real', 'text', 'text', 'text', 'real', 'text']
Sample row: [1.0, 'P. J. Molloy', 'Galway', '2–9', 15.0, 'Antrim']
SQL:

assistant: SELECT "Rank" FROM "Table" WHERE "Opposition" = 'Westmeath';