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: 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

SOLUTION: May 26, 1949

PROBLEM: Claudia Cardinale was born Claude Joséphine Rose Cardinale in La Goulette, a neighbourhood of Tunis, French protectorate of Tunisia, on 15 April 1938

SOLUTION: 15 April 1938

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

SOLUTION:
22 November 1965