user: Question: What was the score when Nacional was the champion, River Plate was the runner-up, and the venue was Centenario?
Columns: ['Year', 'Champion', 'Runner-up', 'Score', 'City', 'Venue']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1913.0, '(Abandoned) 1', '(Abandoned) 1', '(Abandoned) 1', '(Abandoned) 1', '(Abandoned) 1']
SQL:

assistant: SELECT "Score" FROM "Table" WHERE "Champion" = 'Nacional' AND "Venue" = 'Centenario' AND "Runner-up" = 'River Plate';