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]: Dormer was born in Reading, Berkshire, England, on 11 February 1982, daughter of Gary Dormer and wife Claire Richards and sister of Mark Dormer and Samantha Dormer
[A]: 11 February 1982


[Q]: Emma Charlotte Duerre Watson was born on 15 April 1990 in Paris, to English lawyers Chris Watson and Jacqueline Luesby
[A]: 15 April 1990


[Q]: Law was born on 29 December 1972 in Lewisham, South London, the second child of junior and later on, comprehensive school teachers Margaret Anne Heyworth and Peter Robert Law; his father later became, according to Law, "the youngest headmaster in London"
[A]:
29 December 1972