Complex sentence: The graffiti found on "Papa India's" P3 desk was analysed by a handwriting expert during the investigation to determine who might have written it, but this could not be determined and the public inquiry members eventually dismissed it as irrelevant.
Split into simpler sentences: The graffiti found on "Papa India's" P3 desk was analysed by a handwriting expert during the investigation to determine who might have written it. It was not positively determined who might have created it, and the public inquiry members eventually dismissed it as irrelevant.