Complex sentence: For a time in the early 90s a reserve for Bonobo chimpanzees rescued from poor conditions took up residence in one part of the unspoiled campus before a permanent home was built for them on the outskirts of Kinshasa.
Split into simpler sentences: For a time in the early 90s a reserve for Bonobo chimpanzees rescued from poor conditions occupied part of the unspoiled campus. Subsequently, however, a permanent home was built for those bonobos on the outskirts of Kinshasa.