human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Source, Date, Goberman, Loera, Merkley, Neville, Novick, Obrist, Other/ Undecided
###Question: Which Goberman has a Date of april 28–april 30, 2008?
gpt
SELECT Goberman FROM table WHERE Date = april 28–april 30, 2008