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Assessing whether a concentration exists may be complex , depending on the characteristics and holdings of the REITs to which an institution lends , and may involve consideration of the institution 's direct commercial real estate lending as well as its loans to REITs . " January 14 , 2007 : Robo-builder threatens the brickie . The distribution of weighted estimates for each of the bootstrap replicates approximates the sampling distibution of the estimate made with the full sample and the main analysis weights . This relates to gold teeth and valuables of gold that had been found on the corpses . " Video research at MIT puts words into mouths . Abraham Lindwaser , who was made to extract teeth in Treblinka , relates that during the period that the transports arrived , every week an average of two suitcases full of gold , each with 18 kg , were sent from Treblinka .