How many wrestlers are recorded for the chamber that's method of elimination was pinned after being hit by a lead pipe? 
CREATE TABLE "elimination_chamber_entrances_and_elimin" (
  "eliminated" real,
  "wrestler" text,
  "entered" real,
  "eliminated_by" text,
  "method_of_elimination" text,
  "time" text
);
SELECT COUNT("wrestler") FROM "elimination_chamber_entrances_and_elimin" WHERE "method_of_elimination"='Pinned after being hit by a lead pipe';