Task: Question Answering
Input (English): Passage: I decided to write a letter to my aunt , whom I had n't seen in a long time . First I gathered my supplies . I picked out a pen , paper , an envelope , my address book , and a postage stamp . I licked the sticky strip on the flap of the envelope and pressed it down to seal the envelope . Then I wrote my name and address on the upper left corner . After consulting my address book , I wrote my aunt 's name and address very neatly in the center of the envelope . I checked the addresses again to make sure they were neat and correct , and then I affixed the stamp to the upper right corner of the envelope . After putting the letter in the mailbox , I raised the red flag so the postman would know I had outgoing mail . Question: What did they put the letter in? Option1: a box Option2: mailbox
Output (English): mailbox