How many Liberal candidates have a Liberal leader of pearson, and a % of popular vote of 40.2%, and Seats won smaller than 131?
CREATE TABLE "liberal_party_federal_electoral_results" (
  "year" text,
  "seats_in_house" real,
  "liberal_candidates" real,
  "seats_won" real,
  "seat_change" text,
  "popular_vote" real,
  "pct_of_popular_vote" text,
  "result" text,
  "liberal_leader" text
);
SELECT COUNT("liberal_candidates") FROM "liberal_party_federal_electoral_results" WHERE "liberal_leader"='pearson' AND "pct_of_popular_vote"='40.2%' AND "seats_won"<131;