Question: What is the smallest number for Cars per Set built in 1977-1979 larger than 32?
SQL: SELECT MIN("Cars per Set") FROM "2-1131463-1" WHERE "Year Built" = '1977-1979' AND "Number" > 32.0;

Question: What unit has cars per set larger than 9 built in 1982?
SQL: SELECT "Unit Numbers." FROM "2-1131463-1" WHERE "Cars per Set" > 9.0 AND "Year Built" = '1982';

Question: What is the largest number of cars per set that is less than 9?
SQL: SELECT MAX("Number") FROM "2-1131463-1" WHERE "Cars per Set" < 9.0;

Question: What year was the Class 253 larger than 18 built?
SQL: SELECT "Year Built" FROM "2-1131463-1" WHERE "Class" = 'Class 253' AND "Number" > 18.0;