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]: Cooper was born on January 5, 1975, in Abington Township, near Philadelphia, and grew up in the nearby communities of Jenkintown and Rydal
[EX A]: January 5, 1975

[EX Q]: Clooney was born on May 6, 1961 in Lexington, Kentucky
[EX A]: May 6, 1961

[EX Q]: Melissa Ann McCarthy was born on August 26, 1970 in Plainfield, Illinois to Sandra and Michael McCarthy
[EX A]:
August 26, 1970