Complex sentence: Giovanni Pettinato at first supported the Naram-Sin theory, then proposed the high dating theory, while the discoverer of Ebla Paolo Matthiae supported the Naram-Sin theory then shifted to the Sargon theory as more probable.
Split into simpler sentences: Giovanni Pettinato at first supported the Naram-Sin theory, then proposed the high dating theory. While the discoverer of Ebla Paolo Matthiae supported the Naram-Sin theory then shifted to the Sargon theory as more probable.