Question: What is the total diagram for builder York?
SQL: SELECT SUM("Diagram") FROM "2-12444110-1" WHERE "Builder" = 'York';

Question: What fleet  numbers have a diagram less than 99 and built in 1960?
SQL: SELECT "Fleet numbers" FROM "2-12444110-1" WHERE "Diagram" < 99.0 AND "Built" = '1960';

Question: What diagram built in 1962 has a lot number smaller than 30702?
SQL: SELECT MIN("Diagram") FROM "2-12444110-1" WHERE "Built" = '1962' AND "Lot No." < 30702.0;

Question: What builder has lot number 30702?
SQL: SELECT "Builder" FROM "2-12444110-1" WHERE "Lot No." = 30702.0;