Complex sentence: Some survivors such as Sawyer, Hurley and Claire go with Locke to the barracks because they believe that the people arriving at the Island will not rescue them however the majority including Juliet remain with Jack in hopes of getting rescued.
Split into simpler sentences: Some survivors such as Sawyer, Hurley and Claire go with Locke to the barracks because they believe that the people arriving at the Island will not rescue them. However, the majority including Juliet remain with Jack in hopes of getting rescued.