Complex sentence: A 19-years-old figure skater from Canada, Jean-Jacques, or "JJ", comes from a family of figure skaters, his parents were Olympic ice dance champions and his younger brother and sister participates in the junior league.
Split into simpler sentences: A 19-years-old figure skater from Canada, Jean-Jacques, or "JJ", comes from a family of figure skaters. His parents were Olympic ice dance champions and his younger brother and sister participates in the junior league.