input: Text:... and it comes out here By LESTER DEL REY Illustrated by DON SIBLEY There is one fact no sane man can quarrel with... everything has a beginning and an end. But some men aren't sane; thus it isn't always so! No, you're wrong. I'm not your father's ghost, even if I do look a bit like him. But it's a longish story, and you might as well let me in. You will, you know, so why quibble about it? At least, you always have... or do... or will. I don't know, verbs get all mixed up. We don't have the right attitude toward tenses for a situation like this. Anyhow, you'll let me in. I did, so you will. Thanks. You think you're crazy, of course, but you'll find out you aren't. It's just that things are a bit confused. And don't look at the machine out there too long—until you get used to it, you'll find it's hard on the eyes, trying to follow where the vanes go. You'll get used to it, of course, but it will take about thirty years. You're wondering whether to give me a drink, as I remember it. Why not? And naturally, since we have the same tastes, you can make the same for me as you're having. Of course we have the same tastes—we're the same person. I'm you thirty years from now, or you're me. I remember just how you feel; I felt the same way when he—that is, of course, I or we—came back to tell me about it, thirty years ago. Here, have one of these. You'll get to like
  Question: Why is the air inside the machine not stale on the return trip like it had been on the prior trip?
  
   (A) Because the generator is working and clearing the air. 
   (B) Because there is a clearer air flow now with the retrieval of the generator. 
   (C) Because no one is smoking inside the machine. 
   (D) Because there is only one Jerome smoking inside the machine. 
  Answer:<extra_id_0>
output: <extra_id_0> Because there is only one Jerome smoking inside the machine.<extra_id_1>