Given a short bio of a person, find the minimal text span containing the date of birth of the person. The output must be the minimal text span that contains the birth date, month and year as long as they are present. For instance, given a bio like 'I was born on 27th of Decemeber 1990, and graduated high school on 23rd October 2008.' the output should be '27th of December 1990'.

[EX Q]: Naomie Harris was born on 6 September 1976 in Islington, London, where she was raised
[EX A]: 6 September 1976

[EX Q]: Christopher Hemsworth was born on 11 August 1983 in Melbourne, Victoria, to Leonie (née van Os), an English teacher, and Craig Hemsworth, a social-services counsellor
[EX A]: 11 August 1983

[EX Q]: Jonathan Vincent Voight was born on December 29, 1938, in Yonkers, New York, to Barbara (née Kamp) and Elmer Voight (Elemír Vojtka, Slovakia), a professional golfer
[EX A]:
December 29, 1938