Complex sentence: Cole shows himself to be very well educated and intelligent during the game, particularly through his knowledge of literature, as he recognises a poem-left by a killer-as "Prometheus Unbound", stating his fondness for Percy Shelley.
Split into simpler sentences: Cole shows himself to be well educated and intelligent during the game, particularly through his knowledge of literature. He recognizes a poem left by a killer as "Prometheus Unbound," stating his fondness for Percy Shelley.