which championship had helena suková tom nijssen as opponents in the final and nicole provis as partner, the surface was hard and the outcome was winner
CREATE TABLE "mixed_doubles_7_5_titles_2_runner_ups" (
  "outcome" text,
  "year" real,
  "championship" text,
  "surface" text,
  "partner" text,
  "opponents_in_the_final" text,
  "score_in_the_final" text
);
SELECT "championship" FROM "mixed_doubles_7_5_titles_2_runner_ups" WHERE "outcome"='Winner' AND "surface"='Hard' AND "partner"='Nicole Provis' AND "opponents_in_the_final"='Helena Suková Tom Nijssen';