CREATE TABLE table_10089 ("Number" FLOAT, "Name" TEXT, "Year Built" TEXT, "Boat Builder" TEXT, "Current Status" TEXT)

What is the boat builder for a boat built in 1910/11 and a number of 39?
SELECT "Boat Builder" FROM table_10089 WHERE "Year Built" = '1910/11' AND "Number" = '39'
SELECT "Boat Builder" FROM "table_10089" WHERE "Number" = '39' AND "Year Built" = '1910/11'