Question: who has oedipus sent to the oracle for an answer?
Answer: Oedipus replies that he already sent his brother-in-law, Creon, to the oracle at Delphi to learn how to help the city. Creon returns with a message from the oracle: the plague will end when the murderer of Laius, former king of Thebes, is caught and expelled; the murderer is within the city.