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:
Hart was born on July 6, 1979 in Philadelphia, Pennsylvania

Ex Output:
July 6, 1979


Ex Input:
Diesel was born Mark Sinclair on July 18, 1967, in Alameda County, California, where his mother was also born, though later moved to New York City with his fraternal twin brother, Paul

Ex Output:
July 18, 1967


Ex Input:
Ryan Rodney Reynolds was born on October 23, 1976, in Vancouver, British Columbia

Ex Output:

October 23, 1976