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'.

Milena Markovna Kunis was born on August 14, 1983, in Chernivtsi, Ukrainian SSR, in the Soviet Union
August 14, 1983

Alexandra Anna Daddario was born in New York City, on March 16, 1986, the eldest child of Christina, a lawyer, and Richard Daddario, a prosecutor and former head of the New York City Police Department counterterrorism unit
March 16, 1986

Edward Furlong was born August 2, 1977 in Glendale, California, the son of Eleanor Torres (née Tafoya), a youth-center worker and Heinrich Bruno Wittig

August 2, 1977