Complex sentence: Anna was born in 1991 to Cara Clausen, who placed her for adoption with Jan and Roberta DeBoer without telling Schmidt that he was the father; she also put a different man's name on the birth certificate, further obscuring paternity.
Split into simpler sentences: Anna was born in 1991 to Cara Clausen, who placed her for adoption with Jan and Roberta DeBoer without telling Schmidt that he was the father. She also put a different man's name on the birth certificate, further obscuring paternity.