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: Diesel was born Mark Sinclair on July 18, 1967, in Alameda County, California, where his mother was also born, though later moved to New York City with his fraternal twin brother, Paul

SOLUTION: July 18, 1967

PROBLEM: Steven Allan Spielberg was born on December 18, 1946 in Cincinnati, Ohio

SOLUTION: December 18, 1946

PROBLEM: James Francis Cameron was born on August 16, 1954 in Kapuskasing, Ontario, the son of Philip Cameron, an electrical engineer, and Shirley (née Lowe), an artist and nurse

SOLUTION:
August 16, 1954