human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Member State sorted by GDP, GDP in s billion of USD (2012), GDP % of EU (2012), Annual change % of GDP (2012), GDP per capita in PPP US$ (2012), Public Debt % of GDP (2013 Q1), Deficit (-)/ Surplus (+) % of GDP (2012), Inflation % Annual (2012), Unemp. % 2013 M7
###Question: What is the GDP % of EU in 2012 of the country with a GDP in billions of USD in 2012 of 256.3?
gpt
SELECT GDP % of EU (2012) FROM table WHERE GDP in s billion of USD (2012) = 256.3