["< sod > in 2007, berlin germany was an advising scholar for the internationally award - winning, new pbs - broadcast documentary'' [ [ prince among slaves ] ]'', which produced by [ http : / / www. upf. com tv / unity productions foundation ]. < eod > < sod > again in 2007, berlin was an advising faculty scholar for the award - winning, pbs - broadcast documentary'' [ [ prince prince among slaves ( film ) | prince among slaves ] ]'', produced by [ http : / / www. portal upf. the tv / unity productions foundation ]. < eod >"]