How many u.s. episodes have Garfield episode 2 the picnic panic?
CREATE TABLE "table1_1852270_6" (
  "episode" text,
  "garfield_episode_1" text,
  "u_s_acres_episode" text,
  "garfield_episode_2" text,
  "original_airdate" text
);
SELECT COUNT("u_s_acres_episode") FROM "table1_1852270_6" WHERE "garfield_episode_2"='The Picnic Panic';