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]: George Raymond Stevenson was born in Lisburn on 25 May 1964, the second of three sons born to Irish parents
[EX A]: 25 May 1964

[EX Q]: Gandolfini was born in Westwood, New Jersey on September 18, 1961
[EX A]: September 18, 1961

[EX Q]: Anne Jacqueline Hathaway was born on November 12, 1982, in the Brooklyn borough of New York City
[EX A]:
November 12, 1982