Conversation so far:
Where did Barack Obama attend school?
Barack Obama started in St. Francis Pre-Education from age three to five. From age six to ten, he then attended local Indonesian-language schools.
Where else did Barack Obama attend besides St. Francis Pre-Education and local Indonesian-language schools?
Barack Obama attended Punahou School—a private college preparatory school.
Did Barack Obama go to college?
Barack Obama graduated from Columbia University with a BA degree in 1983.

Question: What degree did he earn?
Self-contained rewrite: What degree did Barack Obama earn from Columbia University?