What is the average 2002 value for Sunflower, which had a 2010 value less than 5587 and a 2007 value greater than 546?
CREATE TABLE "romanian_agricultural_research" (
  "production_year" text,
  "2001" real,
  "2002" real,
  "2003" real,
  "2004" real,
  "2005" real,
  "2006" real,
  "2007" real,
  "2008" real,
  "2009" real,
  "2010" real,
  "2011" real
);
SELECT AVG("2002") FROM "romanian_agricultural_research" WHERE "2010"<5587 AND "production_year"='sunflower' AND "2007">546;