Task: Sentence Expansion
Input (English): Polaris ( Alpha Ursae Minoris ) is the Pole Star or North Star .
Output (English): Polaris , designated α Ursae Minoris ( Latinized to Alpha Ursae Minoris , abbreviated Alpha UMi , α UMi ) , commonly the North Star or Pole Star , is the brightest star in the constellation of Ursa Minor .