Teacher: 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'.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Basinger was born in Athens, Georgia, on December 8, 1953
Solution: December 8, 1953
Reason: The output is correct as it is a valid text span, is of minimal length and is the correct date of birth.

Now, solve this instance: Thomas Jacob Black was born in Santa Monica, California, on August 28, 1969, the son of satellite engineers Thomas William Black and Judith Love Cohen
Student:
August 28, 1969