Question: When is Robert A. Taft's father's birthday?
Sentence (from "William Howard Taft"): William Howard Taft (September 15, 1857 – March 8, 1930) was the 27th president of the United States (1909–1913) and the tenth chief justice of the United States (1921–1930), the only person to have held both offices.
Relevant evidence: Yes