Complex sentence: The Doctor decides to leave his house once more to investigate the desolate and faraway place where the church once stood, instead finding a madman in the middle of ruins desperately ringing the bells and shouting nonsensical phrases.
Split into simpler sentences: The Doctor decides to leave his house once more to investigate the desolate and faraway place where the church once stood. Instead, he discovers a madman in the middle of ruins desperately ringing the bells and shouting nonsensical phrases.