user: Question: What date has Alamodome, San Antonio, United States as the venue?
Columns: ['Date', 'Venue', 'Score', 'Result', 'Competition']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['January 21, 2002', 'Rose Bowl , Pasadena , United States', '3–1', 'Win', '2002 CONCACAF Gold Cup']
SQL:

assistant: SELECT COUNT("Date") FROM "Table" WHERE "Venue" = 'Alamodome, San Antonio, United States';