CREATE TABLE table_69990 ("Lot No." FLOAT, "Diagram" FLOAT, "Built" CLOB, "Builder" CLOB, "Fleet numbers" CLOB)

What builder has lot number 30702?
SELECT "Builder" FROM table_69990 WHERE "Lot No." = '30702'
SELECT "Builder" FROM "table_69990" WHERE "Lot No." = '30702'