Complex sentence: "Arrow on the Doorpost" is the thirteenth episode of the third season of the post-apocalyptic horror television series "The Walking Dead", which originally aired on AMC in the United States on March 10,2013.
Split into simpler sentences: Arrow on the Doorpost is the thirteenth episode of the third season of the post-apocalyptic horror television series "The Walking Dead". It originally aired on AMC in the United States on March 10,2013.