A standard deck of 52 cards has 13 ranks (Ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, Jack, Queen, King) and 4 suits such that there is exactly one card for any given rank and suit. Two of the suits are black and the other two suits are red. The deck is randomly arranged. What is the probability that the top card is a heart of a jack?