CREATE TABLE "commentators_and_spokespersons" (
  "year_s" real,
  "grand_final_television_commentator" text,
  "grand_final_dual_television_commentator" text,
  "spokesperson" text,
  "semi_final_television_commentator" text,
  "semi_final_dual_television_commentator" text
);

Question: What is the semi-final dual television commentator status of the year with Pierre Tchernia as the grand final television commentator and an unknown spokesperson?
SQL: SELECT "semi_final_dual_television_commentator" FROM "commentators_and_spokespersons" WHERE "grand_final_television_commentator"='pierre tchernia' AND "spokesperson"='unknown';

Question: What is the semi-final television commentator status in 1962 with an unknown spokesperson?
SQL: SELECT "semi_final_television_commentator" FROM "commentators_and_spokespersons" WHERE "spokesperson"='unknown' AND "year_s"=1962;

Question: What is the grand final television commentator status after 1959 when Dave was the grand final dual television commentator and Marie Myriam was the spokesperson?
SQL: SELECT "grand_final_television_commentator" FROM "commentators_and_spokespersons" WHERE "year_s">1959 AND "grand_final_dual_television_commentator"='dave' AND "spokesperson"='marie myriam';

Question: What is the grand final dual television commentator status of the year when Amaury Vassili was the spokesperson?
SQL: SELECT "grand_final_dual_television_commentator" FROM "commentators_and_spokespersons" WHERE "spokesperson"='amaury vassili';