Complex sentence: Mariss Ivars Georgs Jansons (born 14 January 1943) is a Latvian conductor, the son of conductor Arvīds Jansons (1914-1984); his grandfather, Elbert Jansons (1897--1973), was an explorer.
Split into simpler sentences: Mariss Ivars Georgs Jansons (born 14 January 1943) is a Latvian conductor, the son of conductor Arvīds Jansons (1914-1984). His grandfather, Elbert Jansons (1897--1973), was an explorer.