What suburb/town has school years of k-6, was founded before 1875, and has Ashfield Public School as its school?
CREATE TABLE "a" (
  "school" text,
  "suburb_town" text,
  "years" text,
  "founded" real,
  "website" text
);
SELECT "suburb_town" FROM "a" WHERE "years"='k-6' AND "founded"<1875 AND "school"='ashfield public school';