Complex sentence: In 1994, at the age of three his mother began a relationship with Sean Combs, he adopted and raised Quincy and the couple had three more children together, a son Christian and twin daughters D'Lila and Jessie.
Split into simpler sentences: In 1994, at the age of three his mother began a relationship with Sean Combs, who adopted and raised Quincy. The couple had three more children together, a son, Christian, and twin daughters D'Lila and Jessie.