Complex sentence: Most of the current Western Administrative District became part of Moscow in 1960 with the district of Solntsevo (located beyond MKAD) added in 1984 and redeveloped as a typical residential district.
Split into simpler sentences: Most of the current Western Administrative District became part of Moscow in 1960. The district of Solntsevo, which is located beyond MKAD was added in 1984 and redeveloped as a typical residential district.