user: Question: Which Thirds (Under 17's) have a Reserve of Barnawartha?
Columns: ['YEAR', 'Seniors', 'Reserves', "Thirds (Under 17's)", "Fourths (Under 14's)"]
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2002.0, 'Barnawartha', 'Barnawartha', 'Barnawartha', 'Barnawartha']
SQL:

assistant: SELECT "Thirds (Under 17's)" FROM "Table" WHERE "Reserves" = 'Barnawartha';