Complex sentence: Right across Jepara room is Ruang Raden Saleh (Raden saleh room), named after the famous painter Indonesian Raden Saleh Syarief Boestaman because there are five Raden Saleh's masterpiece paintings hung in this room.
Split into simpler sentences: Right across Jepara room is Ruang Raden Saleh (Raden Saleh room), named after the famous Indonesian painter Raden Saleh Syarief Boestaman. There are five Raden Saleh's masterpiece paintings in this room.