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'.

Example Input: Liu was born on December 2, 1968, in Jackson Heights, Queens, New York
Example Output: December 2, 1968

Example Input: Emily Olivia Leah Blunt was born on 23 February 1983 in the London Borough of Wandsworth, the second of four children born to Joanna, a former actress and teacher, and barrister Oliver Blunt, QC
Example Output: 23 February 1983

Example Input: John Charles Carter was born on October 4, 1923, in Wilmette, Illinois, to Lilla (née Baines; 1899–1994) and Russell Whitford Carter (1897–1966), a sawmill operator
Example Output:
October 4, 1923

