CREATE TABLE table_45119 ("Name" CLOB, "Latitude" CLOB, "Longitude" CLOB, "Diameter  ( km ) " FLOAT, "Year named" CLOB)

What is the smallest diameter for Eirene Tholus?
SELECT MIN("Diameter (km)") FROM table_45119 WHERE "Name" = 'eirene tholus'
SELECT MIN("Diameter (km)") FROM "table_45119" WHERE "Name" = 'eirene tholus'