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'.

Dwayne Douglas Johnson was born in Hayward, California on May 2, 1972, the son of Ata Johnson (née Maivia; born 1948) and former professional wrestler Rocky Johnson (born Wayde Douglas Bowles; 1944–2020)
May 2, 1972

Alexandra Anna Daddario was born in New York City, on March 16, 1986, the eldest child of Christina, a lawyer, and Richard Daddario, a prosecutor and former head of the New York City Police Department counterterrorism unit
March 16, 1986

Cooper was born on January 5, 1975, in Abington Township, near Philadelphia, and grew up in the nearby communities of Jenkintown and Rydal

January 5, 1975