CREATE TABLE table_65646 ("Date Released" TEXT, "Polling institute" TEXT, "Social Democratic" TEXT, "Socialist" TEXT, "Green-Communist" TEXT, "Democratic and Social Centre" TEXT, "Lead" TEXT)

What's the green communist when Euroteste/JN is the polling Institute?
SELECT "Green-Communist" FROM table_65646 WHERE "Polling institute" = 'euroteste/jn'
SELECT "Green-Communist" FROM "table_65646" WHERE "Polling institute" = 'euroteste/jn'