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: Margot Elise Robbie was born on 2 July 1990 in Dalby, Queensland, to Doug Robbie, a former farm-owner and sugarcane tycoon, and Sarie Kessler, a physiotherapist
Example Output: 2 July 1990

Example Input: Tony Curtis was born Bernard Schwartz on June 3, 1925, at the Fifth Avenue Hospital corner of East 105th Street in Manhattan, New York City, the first of three boys born to Helen (née Klein) and Emanuel Schwartz
Example Output: June 3, 1925

Example Input: Catherine Zeta-Jones was born on 25 September 1969 in Swansea, Wales, to David Jones, the owner of a sweet factory, and his wife Patricia (née Fair), a seamstress
Example Output:
25 September 1969

