input question: A completion problem: if titan 's temperature drops below the point at which water ice sublimates into water vapor , titan 's atmospheric oxygen cycle will stop . '' '' how ? '' asked stowik as he realized that this was probably the longest conversation he had ever had with a girl . '' titan 's oxygen is replenished by the dissociation of hydrogen and oxygen when water vapor interacts with cosmic rays . reduce the water vapor , and you can say goodbye to the
output answer: oxygen

input question: A completion problem: just after takeoff i would have been able to make out my father 's castle on the hill south of los angeles international airport if i had had a pair of binoculars . ned and i chatted about starting a business . if i could just soak up some of his knowledge , it would be very helpful , even with my modest aspirations . he was easy to talk to , unlike my father , but my mission was n't to talk about
output answer: business

input question: A completion problem: it could only have been a more powerful wizard , but there were n't any on campiaa . not that he did n't know about . he and the others had gotten word the moment the hardlows arrived at the shuttle station . both of them had come , bringing all four warlocks with them . delvin did n't have enough power to fight one of those warlocks , let alone
output answer: four

input question: A completion problem: she poked her head out in time to see stan run across the field hurdling over rocks past a structure of stacked stones and into a thick wood . she climbed out of the tent into the sprinkling rain . the little fox was a few yards away , but stan was no longer in sight . she hollered out his name a few more times , unsure whether she should search for him or wait in the
output answer:
tent