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Although the legal right-of-way was cleared by January 1974 , cold weather , the need to hire workers , and construction of the Dalton Highway meant work on the pipeline itself did not begin until March .
 Dalton Highway
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Dalton Highway