In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
Q: What prompted the visit from the astrologer?, Context: According to this narrative, shortly after the birth of young prince Gautama, an astrologer named Asita visited the young prince's father, Suddhodana, and prophesied that Siddhartha would either become a great king or renounce the material world to become a holy man, depending on whether he saw what life was like outside the palace walls.
A:
the birth of young prince Gautama