What is the alternate of the nation with Piotras Gerasimovici as the second?
CREATE TABLE "group_b1" (
  "nation" text,
  "skip" text,
  "third" text,
  "second" text,
  "lead" text,
  "alternate" text
);
SELECT "alternate" FROM "group_b1" WHERE "second"='piotras gerasimovici';