| http://www.w3.org/ns/prov#value | - o turn now to pierre thomas for more on the investigation. pierre, anything new at this hour? >> the information we have, there is a person at a local hospital up there in boston that they are talking to tonight. trying to get a sense of whether he is simply a witness or something more. that person's background is being checked as we speak. they are trying to get a mosaic of his life and determine wh
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