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Effect on indoor environment Trickle vents will help avoid problems associated with poor ventilation in naturally ventilated spaces , including , reduced risk of condensation , avoided over ventilation ( minimizing energy consumption ) , improved comfort through draft avoidance .
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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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