Complex sentence: Rahn (1998) considered "Gethyum" to be part of "Solaria", but it was included in the 2009 construction of Gilliesiea, as discussed above.
Split into simpler sentences: Rahn (1998) considered "Gethyun" to be part of "Solaria". Included in the 2009 construction of Gilliesiea, as discussed above.