What percentage of Slovenes lived in the village of Roach in 1951?
CREATE TABLE "twin_town" (
  "village_german" text,
  "village_slovenian" text,
  "number_of_peoople_1991" real,
  "percent_of_slovenes_1991" text,
  "percent_of_slovenes_1951" text
);
SELECT "percent_of_slovenes_1951" FROM "twin_town" WHERE "village_german"='roach';