Complex sentence: Wood supply to build the Istana came from the region of Dungun and this responsibility of obtaining it was entrusted to Tengku Panglima Besar Tengku Muda Kechik, while bricks and chalk were handled by Tengku Besar Paduka Indera.
Split into simpler sentences: Wood supply to build the Istana came from the region of Dungun and this responsibility of obtaining it was entrusted to Tengku Panglima Besar Tengku Muda Kechik. While bricks and chalk were handled by Tengku Besar Paduka Indera.