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'.

[EX Q]: Seth Aaron Rogen was born on April 15, 1982 in Vancouver, British Columbia to a Jewish family of Ukrainian and Russian origin
[EX A]: April 15, 1982

[EX Q]: Nicholas Caradoc Hoult was born on 7 December 1989 in Wokingham, Berkshire, to Glenis (née Brown), a piano teacher, and Roger Hoult, a pilot
[EX A]: 7 December 1989

[EX Q]: Mendoza was born in Hong Kong in 1978, to mother Robin Jackson, an Australian television personality of English and German descent, and father Noel Mendoza, a jazz pianist and arranger of Filipino and Spanish descent
[EX A]:
1978

