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]: McAvoy was born on 21 April 1979 in Glasgow, to bus-driver-turned-builder James McAvoy Sr
[A]: 21 April 1979


[Q]: Jones was born on September 15, 1946, in San Saba, Texas
[A]: September 15, 1946


[Q]: Sagal was born on January 19, 1954, in Los Angeles, California, to a show business family with five children
[A]:
January 19, 1954