Complex sentence: Between 1948--1950, the headquarters of the United Nations Reliefs and Works Agency (UNRWA) was located there and two years later, its owner turned it into a luxury hotel called "The New Orient House".
Split into simpler sentences: Between 1948--1950, the headquarters of the United Nations Reliefs and Works Agency (UNRWA) was located there. Two years later, its owner turned it into a luxury hotel called "The New Orient House".