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'.

Eastwood was born on May 31, 1930, at Saint Francis Memorial Hospital in San Francisco, California, to Ruth (née Runner; 1909–2006) and Clinton Eastwood (1906–1970)
May 31, 1930,

Jennifer Shrader Lawrence was born on August 15, 1990, in Indian Hills, Kentucky, to Gary, a construction company owner, and Karen (née Koch), a summer camp manager
August 15, 1990

Saldaña was born on June 19, 1978, in Passaic, New Jersey

June 19, 1978

