sentences:  Bart, however, is oblivious to this, and decides to help him return home.Lisa arrives and is happy with the alien in their home and decides to help Bart and Kodos obtain a list of devices (including two tickets to see "Avenue Q", Uranium, and "7 billion body bags") that he can use to contact his home planet, though this appears to be part of his diabolical plan.Homer discovers Kodos when the two accidentally share a shower, but he and Marge decide to let the kids help Kodos anyway, after Kodos hints it would be racist to turn him away (He said that they did not want him in the house because he was Jewish).