CREATE TABLE "p_series_1939_1944" (
  "model" text,
  "built" text,
  "quantity" real,
  "seats" real,
  "length" text,
  "engine" text
);

Question: What is the Model of the Engine with 29 Seats Built in 1941–1942?
SQL: SELECT "model" FROM "p_series_1939_1944" WHERE "seats"=29 AND "built"='1941–1942';

Question: What is the Quantity of the engine Model PG-2901?
SQL: SELECT "quantity" FROM "p_series_1939_1944" WHERE "model"='pg-2901';