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]: Bautista was born January 18, 1969 in Washington, D
[EX A]: January 18, 1969

[EX Q]: Catherine Elise Blanchett was born on 14 May 1969 in the Ivanhoe suburb of Melbourne
[EX A]: 14 May 1969

[EX Q]: Leonard Simon Nimoy was born on March 26, 1931, in the West End of Boston, Massachusetts, United States to Jewish immigrants from Iziaslav (in present-day Ukraine)
[EX A]:
March 26, 1931