CREATE TABLE table_50375 ("Name" TEXT, "Date" TEXT, "Goals" FLOAT, "Assists" FLOAT, "Team" TEXT, "Venue" TEXT, "Opponent" TEXT, "Competition" TEXT, "Total Gs" FLOAT, "Total As" FLOAT)

What is the date of the k-league cup, which has less than 28 goals, at the jeonju venue?
SELECT "Date" FROM table_50375 WHERE "Venue" = 'jeonju' AND "Goals" < '28' AND "Competition" = 'k-league cup'
SELECT "Date" FROM "table_50375" WHERE "Competition" = 'k-league cup' AND "Goals" < '28' AND "Venue" = 'jeonju'