What is the season total number if the primary (South) winners is Ridings High 'A'?
CREATE TABLE "list_of_recent_lower_tier_county_cup_sou" (
  "season" text,
  "junior_south_winners" text,
  "intermediate_south_winners" text,
  "minor_south_winners" text,
  "primary_south_winners" text
);
SELECT COUNT("season") FROM "list_of_recent_lower_tier_county_cup_sou" WHERE "primary_south_winners"='Ridings High ''A''';