Complex sentence: Another Fire Island at 53 degrees 56 minutes N, 168 degrees 02 minutes emerged in 1883, forming a companion island to Bogoslof volcano (known as early as 1768 as Ship Rock).
Split into simpler sentences: Another Fire Island at 53 degrees 56 minutes N, 168 degrees 02 minutes emerged in. The island emerged in 1883, forming a companion island to Bogoslof volcano (known as early as 1768 as Ship Rock).