Table: akka_tholus_2
Columns: name
latitude
longitude
diameter_km
year_named

Question: What is the latitude of the 0 diameter?
SQL: SELECT "latitude" FROM akka_tholus_2 WHERE "diameter_km" = 0

Question: What is the longitude of Angerona Tholus?
SQL: SELECT "longitude" FROM akka_tholus_2 WHERE "name" = 'angerona tholus'

Question: What is the smallest diameter for Eirene Tholus?
SQL: SELECT MIN("diameter_km") FROM akka_tholus_2 WHERE "name" = 'eirene tholus'