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: Clive Owen was born on 3 October 1964 in Keresley, Coventry (then in Warwickshire), the fourth of five sons born to Pamela (née Cotton) and Jess Owen

SOLUTION: 3 October 1964

PROBLEM: 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

SOLUTION: March 16, 1986

PROBLEM: Jennifer Shrader Lawrence was born on August 15, 1990, in Indian Hills, Kentucky, to Gary, a construction company owner, and Karen (née Koch), a summer camp manager

SOLUTION:
August 15, 1990