human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Polling Firm, Date, PSD - PC, UDMR, Elena Băsescu, Others, Undecided
###Question: What was the UDMR for 18-22/04/2009?
gpt
SELECT UDMR FROM table WHERE Date = 18-22/04/2009