Complex sentence: Ngapoi Ngawang Jigme was born in Lhasa as the son of the Horkhang family, a Tibetan aristocratic family descended from former kings of Tibet.
Split into simpler sentences: Ngapoi Ngawang Jigme was born in Lhasa as the son of Horkhang family, a Tibetan aristocrat. His family was descended from former kings of Tibet.