What is the power of b-b wheel arrangement, built in 1952?
CREATE TABLE "fairbanks_morse" (
  "prr_class" text,
  "builder_s_model" text,
  "build_date" text,
  "total_produced" real,
  "wheel_arrangement" text,
  "service" text,
  "power_output" text
);
SELECT "power_output" FROM "fairbanks_morse" WHERE "wheel_arrangement"='b-b' AND "build_date"='1952';