173411
Description Green Archer comprised two units each mounted on a four wheel trailer with levelling jacks , one unit was the complete radar , the other a fully silenced generator inaudible at 200 m to permit operation in forward areas .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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