Complex sentence: He often visited the Cultural Centre (Keimin Bunka Sidosho) in Jakarta, where two employees, D. Djajakusuma and Usmar Ismail, spoke to him and learned about the craft; both became important film directors during the 1950s.
Split into simpler sentences: He often visited the Cultural Centre (Keimin Bunka Sidosho) in Jakarta. There, the employees D. Djajakusuma and Usmar Ismail spoke to him and learned about the craft; the two would later become important film directors during the 1950s.