Complex sentence: Gittes's review of the obituaries uncovers a former resident of the Mar Vista Inn retirement home, being one of the valley's new landowners who infers that Mulwray was murdered when he learned that the new reservoir would be used to irrigate the newly purchased properties.
Split into simpler sentences: Gittes's review of the obituaries uncovers a former resident of the Mar Vista Inn retirement home, who is one of the valley's new landowners. He infers that Mulwray was murdered when he learned that the new reservoir would be used to irrigate the newly purchased properties.