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]: Justin Randall Timberlake was born on January 31, 1981 in Memphis, Tennessee, the son of Janet Lynn (Bomar) Harless and Charles Randall Timberlake, a Baptist church choir director
[EX A]: January 31, 1981

[EX Q]: Luke George Evans was born on Easter Sunday, 15 April 1979, in Pontypool, and brought up in Aberbargoed, a small village in the Rhymney Valley, Wales, the only child of Yvonne and David Evans
[EX A]: Sunday, 15 April 1979

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