Complex sentence: The mansion of Heanton Satchville in the parish of Petrockstowe, Devon no longer exists, but the original building dates back to the time of the Norman conquest, when it was mentioned in the "Domesday Book".
Split into simpler sentences: The mansion of Heanton Satchville in the parish of Petrockstowe, Devon. The original building dates back to the time of the Norman conquest, when it was mentioned in the "Domesday Book".