TASK DEFINITION: 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'.
PROBLEM: Hall was born on 3 May 1982 in London, the daughter of American opera singer Maria Ewing and English stage director and Royal Shakespeare Company founder Peter Hall

SOLUTION: 3 May 1982

PROBLEM: Mikkelsen was born on 22 November 1965 in the sterbro district of Copenhagen, Denmark, the son of mother Bente Christiansen and father Henning Mikkelsen, a cab driver

SOLUTION: 22 November 1965

PROBLEM: Colin James Farrell was born in the Castleknock suburb of Dublin on 31 May 1976, the son of Rita (nee Monaghan) and Eamon Farrell

SOLUTION:
31 May 1976