revision preference src: There is no information about the secular witnesses of the coronation ; certainly many dignitaries from both Greater Poland and Pomerelia must have arrived. Similarly, no sources point to the presence of other Piasts rulers in the ceremony. <SEP> tgt: There is no information about the secular witnesses of the coronation ; certainly many dignitaries from both Greater Poland and Pomerelia must have arrived. No sources point to the presence of other Piasts rulers in the ceremony.