What is the lowest height in feet for the building located in platz der einheit 1, gallus, that was built after 1961 with a height less than 130 meters?
CREATE TABLE "tallest_completed_buildings" (
  "name" text,
  "height_m" real,
  "height_ft" real,
  "location" text,
  "year_built" real
);
SELECT MIN("height_ft") FROM "tallest_completed_buildings" WHERE "year_built">1961 AND "location"='platz der einheit 1, gallus' AND "height_m"<130;