What is the 2nd party for a conservative 1st party with a 1st member Charles Moody in the election of 1851 by-election?
CREATE TABLE "members_of_parliament" (
  "election" text,
  "1st_member" text,
  "1st_party" text,
  "2nd_member" text,
  "2nd_party" text
);
SELECT "2nd_party" FROM "members_of_parliament" WHERE "1st_party"='conservative' AND "1st_member"='charles moody' AND "election"='1851 by-election';