CREATE TABLE table_28347 ("Road race" TEXT, "Distance" TEXT, "Location" TEXT, "Country" TEXT, "Month held" TEXT)

How many times a year is the Brighton Marathon held?
SELECT COUNT("Month held") FROM table_28347 WHERE "Distance" = 'Marathon' AND "Location" = 'Brighton'
SELECT COUNT("Month held") FROM "table_28347" WHERE "Distance" = 'Marathon' AND "Location" = 'Brighton'