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: Chaplin was born on 31 July 1969 in Windsor, in the county of Berkshire, England, the son of Cynthia (née Chaplin), a teacher, and Peter Greenwood CBE, a civil engineer

A: 31 July 1969
****
Q: Daniel Wroughton Craig was born in Chester on 2 March 1968, the son of Carol Olivia (née Williams), an art teacher, and Timothy John Wroughton Craig (1943–2020), a midshipman in the Merchant Navy and steel erector

A: 2 March 1968
****
Q: Naomi Ellen Watts was born on 28 September 1968, in Shoreham, Kent, England

A:
28 September 1968
****