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 Input:
Mortensen was born in Watertown, New York, on October 20, 1958, the son of Grace Gamble (née Atkinson; July 8, 1928 – April 25, 2015) and Viggo Peter Mortensen Sr

Ex Output:
October 20, 1958


Ex Input:
Melissa Ann McCarthy was born on August 26, 1970 in Plainfield, Illinois to Sandra and Michael McCarthy

Ex Output:
August 26, 1970


Ex Input:
Aaron Paul Sturtevant was born in Emmett, Idaho, on August 27, 1979, the youngest of four children born to Darla (née Haynes) and Baptist minister Robert Sturtevant

Ex Output:

August 27, 1979