user: Question: Which Year has a Position of 4th?
Columns: ['Year', 'Competition', 'Venue', 'Position', 'Event']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1999.0, 'World Cross Country Championships', 'Belfast , Northern Ireland', '5th', 'Long race']
SQL:

assistant: SELECT "Year" FROM "Table" WHERE "Position" = '4th';