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: Bryan Lee Cranston was born on March 7, 1956, in Hollywood, Los Angeles, California, the second of three children born to Annalisa (née Sell; 1923–2004), a radio actress, and Joseph Louis Cranston (1924–2014), an actor and former amateur boxer
Example Output: March 7, 1956

Example Input: Born on 17 August 1920, O'Hara began life as Maureen FitzSimons on Beechwood Avenue in the Dublin suburb of Ranelagh
Example Output: 17 August 1920

Example Input: Ryan Thomas Gosling was born on November 12, 1980, in London, Ontario, to Thomas Ray Gosling, a traveling salesman for a paper mill, and Donna, a secretary
Example Output:
November 12, 1980