Complex sentence: Tom and Helen Willis are an interracial couple who were born in the late 1920s, Tom was born May 12,1928 and Helen on August 1,1929.
Split into simpler sentences: Tom and Helen Willis are an interracial couple who were born in the late 1920s. Tom, a Caucasian man, was born May 12,1928 and Helen, an African-American woman, on August 1,1929.