user: Question: What County was built after 1920 with a Latitude of 37°40′30"N?
Columns: ['County', 'Monument name', 'Year built', 'City or Town', 'Latitude', 'Longitude']
Types: ['text', 'text', 'real', 'text', 'text', 'text']
Sample row: ['Anderson', 'Confederate Monument in Lawrenceburg', 1894.0, 'Lawrenceburg', '38°02′06"N', '84°53′44"W']
SQL:

assistant: SELECT "County" FROM "Table" WHERE "Year built" > 1920.0 AND "Latitude" = '37°40′30"N';