Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Example Input: Context: The first astronomer to record the Butterfly Cluster's existence was Giovanni Battista Hodierna in 1654. 
 Question: What year was Butterfly Cluster found?
Example Output: 1654

Example Input: Context: Marjanovic took over Ciguli Miguli only after his proposal for Nikola Tesla, a biography of the famous engineer and inventor, had been rejected by Jadran Film. 
 Question: What production company was involved in Ciguli Miguli?
Example Output: jadran film

Example Input: Context: From cosy cabins and yurts to campervans and huts with character and mod-cons, winter camping can be cool, rather than just chilly, in these beautiful UK settings. Great Langdale, Cumbria Winner of the Great Outdoors accommodation of the year award 2014, this campsite at the head of a valley is a beautiful spot for winter walks. But while hiking should keep you warm by day, a selection of cosy hideaways will keep you _ at night. Visitors can choose from double-glazed wooden camping pods, which include heating and lighting or, for those who want a more boutique outdoors experience, luxury yurts furnished with Moroccan-style rugs and throws, fairy lights, lanterns and a wood-burning stove. And with the Sticklebarn pub - known for its real ales and good local grub - nearby, you should be able to slip into a pretty comfortable routine in no time. Standard pods from PS35 a night (two adults, one child), 01539 432733, nationaltrust.org.uk Vanellus, Elmley national nature reserve, Isle of Sheppey, Kent In the stunning surroundings of the Isle of Sheppey nature reserve, Vanellus is a large shepherd's hut. From the comfort of your abode (which is hooked up to electricity), you can gaze out through floor-to-ceiling windows as the sun rises and sets, watching birds of prey and other wildlife. The reserve can be explored on foot, or you can book a 4WD tour of the area. The farm has a lounge in a converted barn, where you can hang out or eat communally, but if you really can't bear to step into the cold, you can have meals - including hot bacon rolls for breakfast - delivered to your door. From PS180 for a two-night stay (sleeps two), 0117 204 7830, canopyandstars.co.uk The Cabin at NantyrOnnen, near Llandovery, Wales The Cabin is an unusual octagonal wood structure, built by local craftsmen keen to make an eco-friendly home. The electricity supply, for example, is powered by the nearby stream. From the sheltered veranda you can enjoy views across the hills, and the surrounding countryside is perfect for walking all year round. Inside the cosy hut is a wood-burning stove, and you can also warm up in a recently built spring-fed hot tub. From PS85 a night throughout December (sleeps two), mulled wine available 15 Dec-4 Jan, 0117 204 7830, canopyandstars.co.uk Guilden Gate Glamping, Hertfordshire Just 35 minutes by train from London, the Guilden Gate campsite is ideal for an easy rural family escape from the capital. Set in a woodland glade, a campervan is your main bedroom, and a bell tent can act as another bedroom, or a lounge. There's also a huge wok-shaped hot tub, big enough for six adults. The site is close to Cambridge (20 minutes' drive), so you can explore the city by day - if the icy countryside gets too much. From PS65 a night (sleeps four, minimum two-night stay), 01763 243960, goglamping.net 
 Question: A family of 6 (grandparents, parents and twins) wants to go for winter camping for 4 days. Which of the site is cheapest?
Example Output:
great langdale