Complex sentence: Later novelists (Chevalley, 1936) introduced the idea that Chastel shot it with a blessed silver bullet of his own manufacture and upon being opened, the animal's stomach was shown to contain human remains.
Split into simpler sentences: Later novelists (Chevalley, 1936) introduced the idea that Chastel shot it with a blessed silver bullet of his own manufacture. Upon being opened, the animal's stomach was shown to contain human remains.