<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.mnamo mwaka 2016, mohammed alitia saini ahadi ya kutoa the giving pledge, ambayo ni ahadi ya kuchangia angalau nusu ya utajiri wake kwenda watu wasiojiweza.  <response>: in 2012, blank signed the giving pledge, promising to give away at least half of his fortune. 