Which date has an Opera usage percentage of 5.1% and Internet Explorer usage of 59.5%?
CREATE TABLE "europe_usage_share_data_from_at_internet" (
  "date" text,
  "internet_explorer" text,
  "firefox" text,
  "opera" text,
  "safari" text,
  "source" text
);
SELECT "date" FROM "europe_usage_share_data_from_at_internet" WHERE "opera"='5.1%' AND "internet_explorer"='59.5%';