user: Question: What is the average Year Named, when Latitude is 37.9n, and when Diameter (km) is greater than 76?
Columns: ['Name', 'Latitude', 'Longitude', 'Diameter (km)', 'Year named']
Types: ['text', 'text', 'text', 'real', 'real']
Sample row: ['Aitchison Patera', '16.7S', '349.4E', 28.0, 1994.0]
SQL:

assistant: SELECT AVG("Year named") FROM "Table" WHERE "Latitude" = '37.9n' AND "Diameter (km)" > 76.0;