CREATE TABLE table_78207 ("Date ( s )  conducted" TEXT, "Polling organisation/client" TEXT, "Cons" TEXT, "Plaid Cymru" TEXT, "Lib Dem" TEXT, "Others" TEXT, "Lead" TEXT)

I want the plaid cymru for Polling organisation/client of yougov/itv wales for 4 may 2011
SELECT "Plaid Cymru" FROM table_78207 WHERE "Polling organisation/client" = 'yougov/itv wales' AND "Date(s) conducted" = '4 may 2011'
SELECT "Plaid Cymru" FROM "table_78207" WHERE "Date(s) conducted" = '4 may 2011' AND "Polling organisation/client" = 'yougov/itv wales'