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]: Fassbender was born in Heidelberg on 2 April 1977, the son of Northern Irish mother Adele (from Larne) and German father Josef Fassbender
[EX A]: 2 April 1977

[EX Q]: James Francis Cameron was born on August 16, 1954 in Kapuskasing, Ontario, the son of Philip Cameron, an electrical engineer, and Shirley (née Lowe), an artist and nurse
[EX A]: August 16, 1954

[EX Q]: On 19 August 1946, Ti was born as Tam Fu Wing (譚富榮) in Xinhui, Guangdong Province, China into a family with 4 members including himself, his parents and a younger sister
[EX A]:
On 19 August 1946

