William entered the den. James entered the den. James exited the den. Aiden entered the den. The lettuce is in the green box. Aiden exited the den. Aiden entered the living room. William moved the lettuce to the blue treasure chest.
William think that Aiden searches for the lettuce in the blue treasure chest.
 William think that Aiden searches for the lettuce in the green_box
 William think that Aiden searches for the lettuce in the blue_treasure_chest