CREATE TABLE "rs_series_b_b" (
  "model" text,
  "specification" text,
  "build_date" text,
  "total_produced" real,
  "wheel_arrangement" text,
  "prime_mover" text,
  "power_output" text
);

Question: Which prime mover had a Model of rs-18?
SQL: SELECT "prime_mover" FROM "rs_series_b_b" WHERE "model"='rs-18';

Question: Which model had a Specification of dl-718?
SQL: SELECT "model" FROM "rs_series_b_b" WHERE "specification"='dl-718';

Question: Which power output had a Build date of 1951–1956?
SQL: SELECT "power_output" FROM "rs_series_b_b" WHERE "build_date"='1951–1956';

Question: Which wheel arrangement had a Specification of dl-700?
SQL: SELECT "wheel_arrangement" FROM "rs_series_b_b" WHERE "specification"='dl-700';