CREATE TABLE "production" (
  "block" real,
  "director" text,
  "writers" text,
  "producer" text,
  "code" text
);

Question: Who is the producer for the director Richard Clark?
SQL: SELECT "producer" FROM "production" WHERE "director"='richard clark';

Question: What is the lowest block for director Graeme Harper?
SQL: SELECT MIN("block") FROM "production" WHERE "director"='graeme harper';