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'.

Let me give you an example: Basinger was born in Athens, Georgia, on December 8, 1953
The answer to this example can be: December 8, 1953
Here is why: The output is correct as it is a valid text span, is of minimal length and is the correct date of birth.

OK. solve this:
Hayley Elizabeth Atwell was born on 5 April 1982 in London, an only child
Answer:
5 April 1982