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]: Martin was born on August 14, 1945 in Waco, Texas, the son of Mary Lee (née Stewart; 1913–2002) and Glenn Vernon Martin (1914–1997), a real estate salesman and aspiring actor
[EX A]: August 14, 1945

[EX Q]: Amanda Michelle Seyfried was born on December 3, 1985, in Allentown, Pennsylvania
[EX A]: December 3, 1985

[EX Q]: Hill was born on December 20, 1983, in Los Angeles, California, to Sharon Lyn (née Chalkin), a costume designer and fashion stylist, and Richard Feldstein, a tour accountant for Guns N' Roses
[EX A]:
December 20, 1983

