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Use "think-tanks" in a sentence
"The man behind the other producer, Walden Media, donates heavily to conservative think-tanks, which promote privatization, vouchers, and school choice."
"NGOs and think-tanks put the number of Iraqi dead at well over 100,000."
"You need technical agencies that can independently interpret the data for you -- those think-tanks, congressional budget offices, and ombudsman services are the best allies of the non-expert."