Complex sentence: That same year, hes and his wife temporarily took in a seven-year-old orphan named John Burke, one of 300 abandoned children sent to Maryland families from the New York City Foundling Asylum run by the Catholic Sisters of Charity.
Split into simpler sentences: That same year, hes and his wife temporarily took in a seven-year-old orphan named John Burke. Burke was one of 300 abandoned children sent to Maryland families from the New York City Foundling Asylum run by the Catholic Sisters of Charity.