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Water power in Coalbrookdale Coalbrookdale was a cradle of the First Industrial Revolution and was the scene of Abraham Darby 's first production of iron by a coke - fired blast furnace , rather than the previous and expensive charcoal .
 Coalbrookdale Coalbrookdale, Abraham Darby
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Coalbrookdale Coalbrookdale, Abraham Darby