Complex sentence: In the, Jackson moving Gandalf's decisive expedition to Dol Guldur to coincides with the quest of Bilbo Baggins and the Dwarves in 2941, the Necromancer is shown as an amorphous entity of shadowy mist floating around in the ruins.
Split into simpler sentences: In the, Jackson moves Gandalf's decisive expedition to Dol Guldur forward in time to coincide with the quest of Bilbo Baggins and the Dwarves in 2941. The Necromancer is shown as an amorphous entity of shadowy mist floating around in the ruins.