user: Question: What is the abbreviation for the University of Tartu?
Columns: ['Name', 'No. Specimens', 'Abbr.', 'Country', 'City']
Types: ['text', 'real', 'text', 'text', 'text']
Sample row: ['Estonian University of Life Sciences', 336000.0, 'TAA', 'Estonia', 'Tartu']
SQL:

assistant: SELECT "Abbr." FROM "Table" WHERE "Name" = 'University of Tartu';