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'.

Example Input: Anne Jacqueline Hathaway was born on November 12, 1982, in the Brooklyn borough of New York City
Example Output: November 12, 1982

Example Input: McAvoy was born on 21 April 1979 in Glasgow, to bus-driver-turned-builder James McAvoy Sr
Example Output: 21 April 1979

Example Input: Eddie Asner was born on November 15, 1929, in Kansas City, Missouri, and grew up in Kansas City, Kansas
Example Output:
November 15, 1929