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]: Benjamin Edward Meara Stiller was born on November 30, 1965, in New York City and raised on the Upper West Side
[EX A]: November 30, 1965

[EX Q]: Rai was born on 1 November 1973 into a Tulu-speaking Bunt family in Mangalore, Karnataka
[EX A]: 1 November 1973

[EX Q]: Howard was born in Duncan, Oklahoma in 1954, the elder son of Jean Speegle Howard (1927–2000), an actress, and Rance Howard (1928–2017), a director, writer, and actor
[EX A]:
1954

