{"answers": "C", "options": ["f : ok , i will try to enter races which only people with lots of experience are allowed to enter .", "f : you suggest me begin with long runs , so i want to try to enter the dragons back .", "f : ok , i will follow your advice , i will begin with easy runs . i won \u2019 t try challenging runs at the beginning .", "f : ok. i will try to enter the dragons back , which takes place over a distance of 700 miles ."], "article": "f : do a lot of people do mountain running ? m : yes , the runs take place in the countryside . the areas like the lake district in the highlands of scotland are very popular . but this does n't stop people from the city taking part . for example , i drive to my club for my city apartment . f : can you tell me the history of mountain running ? m : well , there are records of people doing this going back nearly 1000 years . it was always been connected with country fairs and festivals . overtime it became official , and nowadays a run is operated usually on its own . f : hmm , what are the tougher courses like ? m : there is a race called the dragons back , which takes place over 5 days and over a distance of 200 miles . but before you sign up for it , i should point out that only people with lots of experience are allowed to enter . f : how can you get started in the sport ? m : well , you start with something easy and work your way up to more challenging runs . if you want to enter races , you 'll find their graded in terms of distance and height . but just as people who do road running wo n't necessarily run a marathon , you do n't have to enter mountain running races .", "id": "dev_20"}