Generate a question about the following movie plot: While vacationing in Switzerland, physician Chris Nielsen (Robin Williams) meets artist Annie Collins (Annabella Sciorra). They are instantly attracted to each other, and bond as if they had known each other for a long time. They marry and have two children: Ian (Josh Paddock) and Marie (Jessica Brooks Grant). Their idyllic life comes to an end when the children die in a car crash. Life becomes very difficult: Annie suffers a mental breakdown, and the strains on their marriage threaten to lead to divorce, but they manage to struggle through their losses.On the anniversary of the day they decided not to divorce, Chris is killed in a car accident. Unaware that he is dead and confused when nobody can interact with him, Chris lingers on Earth. He watches Annie's attempts to cope with the loss and he attempts to communicate with her, despite advice from a spirit-like presence that it will only cause her pain. When his attempts only leave her more distraught, he decides to move on.Chris awakens in Heaven, and finds that his immediate surroundings are controlled by his imagination. He meets a man (Cuba Gooding Jr.) whom Chris seems to recognize as Albert, his friend and mentor from his medical residency, and the spirit-like presence from his time as a "ghost" on Earth. Albert will be his guide in this new life. Albert teaches Chris about his new existence in Heaven, and how to shape his little corner of it and to travel to others' "dreams". They are surprised when a Blue Jacaranda tree appears unbidden in Chris' surroundings, matching a tree in a new painting by Annie, which was inspired by Annie's belief that she can communicate with Chris in the afterlife. Albert explains to Chris that this is a sign that the couple are truly soul mates. However, Annie is overcome with despair and decides that Chris cannot, in fact, "see" the painting and destroys the piece. Chris sees his version of the tree disintegrate before his eyes which coincides with the painting being destroyed in the real world.Chris laments he will not...
A:
Who is the tracker?