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]: Tweed was born on March 10, 1957 in Placentia, Newfoundland
[EX A]: March 10, 1957

[EX Q]: Grier was born on May 26, 1949, in Winston-Salem, North Carolina, the daughter of Gwendolyn Sylvia (nee Samuels), a homemaker and nurse, and Clarence Ransom Grier, Jr
[EX A]: May 26, 1949

[EX Q]: Bloom was born on 13 January 1977 in Canterbury, Kent, and was named after the 16th-century English composer Orlando Gibbons
[EX A]:
13 January 1977