question:  Why is Jakdane going to Earth?
context: Trella feared she was in for trouble even before Motwick's head dropped forward on his arms in a drunken stupor. It was a squalid saloon in the rougher section of Jupiter's View, the terrestrial dome-colony on Ganymede. A woman could not possibly make her way through these streets alone to the better section of town, especially one clad in a silvery evening dress. Perhaps she could call one of Motwick's friends; she had no one on Ganymede she could call a real friend herself. The dark man moved in on Trella again as Kregg overtook his quarry and swung a huge fist like a sledgehammer. The dark man, who had grabbed Trella's arm, released her and ran for the door. The gravity of Ganymede was hardly more than that of Earth's moon, but the way the man picked up the limp Motwick with one hand and tossed him over a shoulder was startling: as though he lifted a feather pillow. He followed Trella out the door of the Golden Satellite and fell in step beside her. “No one has ever landed on Jupiter. But his ship was drawn into Jupiter and lost.” “It was drawn into Jupiter, but he landed it successfully,” said Quest. “He and my mother lived on Jupiter until the oxygen equipment wore out at last. I was born and brought up there, and I was finally able to build a small rocket with a powerful enough drive to clear the planet.” “If Dr. Mansard succeeded in landing on Jupiter, why didn't anyone ever hear from him again?” she demanded. Trella had the desk clerk call a cab to deliver the unconscious Motwick to his home. For some reason she decided against telling him that the assignment on which she had come to the Jupiter system was to gather his own father's notebooks and take them back to Earth. Motwick was an irresponsible playboy whom Trella had known briefly on Earth, and Trella was glad to dispense with his company for the remaining three weeks before the spaceship blasted off.
output:  Jakdane is the captain of the ship that Trella and Quest are taking to earth.
options:  Jakdane is a corporate spy from Moon 5 on a mission to infiltrate Dom Blessing's organization.  Jakdane is following Trella to Earth because he is stalking her.  Jakdane is transferring from his company's office on Ganymede to the corporate headquarters on Earth.  Jakdane is the captain of the ship that Trella and Quest are taking to earth.