human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Expression, Y = 2008, Y = 2009, Y = 2010, Y = 2011
###Question: What is the y = 2008 when y = 2011 is a = 3?
gpt
SELECT Y = 2008 FROM table WHERE Y = 2011 = a = 3