Given the question: Generate a question about the following movie plot: Tree of Life is a period piece centered around three boys in the 1950s. The eldest son (Hunter McCracken none SAG) of two characters (Brad Pitt and Jessica Chastain) witnesses the loss of innocence.The movie, which exists as a metaphysical meditation and a lyrical poem, focuses at a microcosmic level on the story of Jack, a jaded, middle aged man (played by Sean Penn) scarred by the memories of an oppressive upbringing by his father (Brad Pitt), as well as the untimely death of his younger brother.We trace the evolution of an eleven-year-old boy in the Midwest, Jack, one of three brothers. At first all seems marvelous to the child. He sees as his mother does, with the eyes of his soul. She represents the way of love and mercy, where the father tries to teach his son the world's way, of putting oneself first. Each parent contends for his allegiance, and Jack must reconcile their claims. The picture darkens as he has his first glimpses of sickness, suffering and death. The world, once a thing of glory, becomes a labyrinth.Framing this story is that of adult Jack, a lost soul in a modern world, seeking to discover amid the changing scenes of time that which does not change: the eternal scheme of which we are a part. When he sees all that has gone into our world's preparation, each thing appears a miracle precious, incomparable. Jack, with his new understanding, is able to forgive his father and take his first steps on the path of life.The story ends in hope, acknowledging the beauty and joy in all things, in the everyday and above all in the family -- our first school -- the only place that most of us learn the truth about the world and ourselves, or discover life's single most important lesson, of unselfish love.
The answer is:
Who played Jack's father?