"Bob is about to hang his eight shirts in the wardrobe. He has four different styles of shirt, two identical ones of each particular style. How many different arrangements are possible if no two identical shirts are next to one another?"
It doesn't matter what texts you do, its whether you analyze/compare with core text well. I have a friend who has found a High band 6 essay (20/20) which had "Mean Girls" as a related text. Gossip Girl is great btw.