Complex sentence: First generation Pakistani Norwegians, who migrate from Pakistan, are distinguished from the mainstream in several demographic aspects, while second generation Pakistani Norwegians, who are born in Norway, are well-established in Norway and have gone on to become professionals and politicians.
Split into simpler sentences: First generation Pakistani Norwegians are distinguished from the mainstream in several demographic aspects, while second generation Pakistani Norwegians are close to mainstream Norwegian society. They are well established in Norway and have gone on to become professionals and politicians.