Complex sentence: Xanadu makes great use of Gothic architecture and, except in the opening newsreel, it always appears in the film at night with fog surrounding it, giving it an ominous look; for Kane, Xanadu becomes more of a prison than a refuge.
Split into simpler sentences: Xanadu makes great use of Gothic architecture and, except in the opening newsreel, it always appears in the film at night with fog surrounding it, giving it an ominous look. This is appropriate since for Kane, Xanadu becomes more of a prison than a refuge.