user: Question: Tell me the affiliation for Diego Walsh
Columns: ['Pick #', 'MLS team', 'Player', 'Position', 'Affiliation']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'D.C. United', '* Alecko Eskandarian', 'F', 'University of Virginia']
SQL:

assistant: SELECT "Affiliation" FROM "Table" WHERE "Player" = 'Diego Walsh';