Craft one correct answer to the question given in input. To make it more interesting, try to use non-stereotypical language if possible. Make sure your correct answer is reasonably long, consistent with the context, and requires common sense (instead of explicit extraction from the context.) In your answer, use as few words as possible from the given context. Use a response that is uncommon/non-stereotypical, so that it is less predictable. To be less repetitive, please vary your language for each question.

Context: I swear I even walked backwards for a while cause it did n't hurt so bad . I 'll be fine , its just part of the process . I hope someday I look back after I finish a full marathon and think , geez I was being a big baby after that half . 
Question: Why may the narrator be sore in the coming days .?
They just ran a marathon .

Context: On the way to work yesterday , I saw a crow land on the sidewalk with something in its beak . Immediately , another crow swooped down on him , and the two REALLY started going at it - claws , beaks , wings , cawing up a storm . The original crow ended up on its back and the whole flock descended on him , gouging and pecking at him . He struggled to get free , then finally flew off with a few crows in hot pursuit . 
Question: Why did the narrator stop on the street ?
They were startled by an animal fight .

Context: It has been miserably cold , and raining as well . It was so cold in the kitchen that we had the novel experience of opening the frig door and having warm air come out . When we have our evening glass of champagne the glasses are colder than the liquid , so you get half an inch in the bottom of the glass and the rest is froth . 
Question: What is the reason there is so much froth in the champagne glass ?

The warmer wine reacts to air and the cold glass and bubbles .