Complex sentence: Wikipedia regards the concept of a neutral point of view (NPOV) as one of its non-negotiable principles; however, it acknowledges that such a concept has its limitations--its policy indeed states that articles should be "as far as possible" written without bias.
Split into simpler sentences: Wikipedia regards the concept of neutral point of view (NPOV) as one of its non-negotiable principles. However it acknowledges that such a concept has its limitations--its policy indeed states that articles should be "as far as possible" written without bias.