rtokens: The terrain is mountainous , the only roads are dirt tracks .
pos: VBN IN JJR IN CD NNS IN JJ , PRP VBZ DT NN IN CD NNS DT NN IN NN CC VBZ VBN IN JJ NN IN DT NN NNS .
tokens: Inhabited by fewer than 3,000 people in total , it sees the sun for 24 hours a day during summer and is plunged into round-the-clock darkness in the winter months .
ltokens: Spitzbergen lies some 500 miles ( 800 km ) off the northern tip of Norway and endures one of the most extreme climates on the planet .