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 Q]: 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 (nee Fair), a seamstress
[EX A]: 25 September 1969

[EX Q]: George Hosato Takei was born Hosato Takei on April 20, 1937 in Los Angeles, California, to Japanese-American parents Fumiko Emily Nakamura (born in Sacramento, California) and Takekuma Norman Takei (born in Yamanashi Prefecture), who worked in real estate
[EX A]: April 20, 1937

[EX Q]: Forest Steven Whitaker was born on July 15, 1961, in Longview, Texas, the son of Laura Francis (nee Smith), a special education teacher who put herself through college and earned two master's degrees while raising her children, and Forest E
[EX A]:
July 15, 1961