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: When Derek joined her , the door man unhooked the rope to let them through , still watching Lucy with undisguised lust as they walked in . A look of utter confusion shown on Derek 's features as they were granted entrance into the club . He draped an arm over Lucy 's shoulders and they made their way through the crowds of people . " So how 'd you do that ?. 
Question: What may be the reason for Derek 's confusion ?
He did n't understand how they were able to get in so fast .

Context: Last weekend I had crashed early on Friday night , so I was up at 5AM . A little later I was hungry , and decided I should uncharacteristically go out for some breakfast . I never have breakfast . 
Question: Why might I never have breakfast ?
I might normally wake up too late for breakfast .

Context: Rainwater from the roof is collected and funneled into a 25,000 gallon underground cistern . Wastewater from showers , sinks and toilets goes into underground purifying tanks and then into the cistern . The collected water then irrigates the land surrounding the house . Surrounding flowers and shrubs native to the area enable the property to blend into the surrounding rural landscape . 
Question: What might this water system be used for ?

It may be a zero - waste watering system .