Answer the following question: Extract the answer to the following question from the movie plot. If the question isn't answerable, please output "Can't answer". Question: Who commands Athena to give Perseus her owl? Title: Clash of the Titans Movie plot: King Acrisius of Argos (Donald Houston) imprisons his daughter Danae (Vida Taylor), jealous of her beauty. When the god Zeus (Laurence Olivier) impregnates her, Acrisius sends his daughter and his newborn grandson Perseus to sea in a wooden chest. In retribution, Zeus kills Acrisius and orders Poseidon (Jack Gwillim) to release the last of the Titans, a gigantic sea creature called the Kraken, to destroy Argos. Meanwhile, Danae and Perseus safely float to the island of Seriphos, where Perseus grows to adulthood. Calibos (Neil McCarthy), son of the sea goddess Thetis (Maggie Smith), is a young man engaged to marry Princess Andromeda (Judi Bowker), the daughter of Queen Cassiopeia (Sian Phillips) and heir to the rich city of Joppa; but for committing several atrocities against Zeus, including hunting and destroying Zeus's sacred flying horses (excepting only Pegasus), Zeus transforms Calibos into a monstrous satyr and he is exiled by his people. In revenge, Thetis transports an adult Perseus (Harry Hamlin) from Seriphos to an abandoned amphitheatre in Joppa, where he is befriended by an elderly poet named Ammon (Burgess Meredith) and learns that Andromeda is under a curse and cannot marry unless her suitor successfully answers a riddle, whose failures are burned at the stake. In order to aid his son, Zeus sends Perseus a god-crafted helmet from Athena (Susan Fleetwood) which makes its wearer invisible, a magical sword from Aphrodite (Ursula Andress), and a shield from Hera (Claire Bloom). Perseus, wearing the helmet, captures Pegasus and follows Andromeda to learn the next riddle. Perseus is nearly killed by Calibos but manages to sever one of Calibos' hands, losing his helmet in the process. Perseus befriends Thallo (Tim Pigott-Smith) and presents himself as suitor and correctly answers the riddle, presenting the severed hand of Calibos. Perseus wins Andromeda's hand in marriage. Calibos, finding that Thetis cannot act against Perseus, instead demands that she take vengeance on Joppa. At the wedding, Queen...
Answer:
Zeus