Complex sentence: Edward was the first character to appear in "The Railway Series" by the Rev. W. Awdry, he is the oldest engine on The Fat Controller's Railway and is part of the central group of characters in the television series.
Split into simpler sentences: Edward was the first character to appear in "The Railway Series" by the Rev. W. Awdry. Edward, he is the oldest engine on The Fat Controller's Railway and is part of the central group of characters in the television series.