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Graham Watts , chief executive of the Construction Industry Council , said : " I do n't think many firms involved in tendering for sensitive projects realise the impact environmental activity has on the cost of running a project .
 Graham Watts, Construction Industry Council
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 Graham Watts, Construction Industry Council