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'.

[Q]: Naomi Ellen Watts was born on 28 September 1968, in Shoreham, Kent, England
[A]: 28 September 1968


[Q]: Liu was born on December 2, 1968, in Jackson Heights, Queens, New York
[A]: December 2, 1968


[Q]: Kirsten Caroline Dunst was born on April 30, 1982, at Point Pleasant Hospital in Point Pleasant, New Jersey
[A]:
April 30, 1982,