user: Question: Tell me the sum of longitude for diameter being 22.6 and latitude less than -12.4
Columns: ['Name', 'Latitude', 'Longitude', 'Diameter (km)', 'Named after']
Types: ['text', 'real', 'real', 'real', 'text']
Sample row: ['Caccini', 17.4, 170.4, 38.1, 'Francesca Caccini , Italian composer']
SQL:

assistant: SELECT SUM("Longitude") FROM "Table" WHERE "Diameter (km)" = 22.6 AND "Latitude" < -12.4;