Complex sentence: Tomas Valdemar Hintnaus (born 15 February 1958) is a retired Brazilian pole vaulter, son of Czech immigrants, Lubomir and Marianne, who escaped from Czechoslovakia in 1948 after the Communist takeover.
Split into simpler sentences: Tomas Valdemar Hintnaus (born 15 February 1958) is a retired Brazilian pole vaulter. He is a son of Czech immigrants, Lubomir and Marianne, who escaped from Czechoslovakia in 1948 after the Communist takeover.