Question: what builder is now Retired
SQL: SELECT "Pennant number" FROM "2-13537940-1" WHERE "Current status" = 'Retired';

Question: what builder launched the name Minerva
SQL: SELECT "Launched" FROM "2-13537940-1" WHERE "Name" = 'Minerva';

Question: what is the name of the builder who launched in Danaide
SQL: SELECT "Launched" FROM "2-13537940-1" WHERE "Name" = 'Danaide';