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FILE PHOTO: Buildings are seen at Sowwah Square on Marayah Island in Abu Dhabi's central business district May 7, 2013. REUTERS/Ben Job/File Photo Image used for illustrative purpose.
United Arab Emirates's sovereign wealth fund Mubadala Investment Company will invest $500 million in U.S. based broadband service provider Brightspeed. (Reporting by Jaiveer Singh Shekhawat in Bengaluru)