user: Question: What is the district where the Thanjavur Medical College is located?
Columns: ['College Name', 'Location', 'District', 'Affiliation', 'Estd']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Thanjavur Medical College', 'Thanjavur', 'Thanjavur district', 'Tamil Nadu Dr. M.G.R. Medical University', '1958']
SQL:

assistant: SELECT "District" FROM "Table" WHERE "College Name" = 'Thanjavur Medical College';