Task: Question Answering
Input (English): Passage: I want to write a letter to my best friend , who lives far away from me . I am going to share with her some activities I have been enjoying . Because I enjoy writing letters on paper , I will use stationery I keep in my top desk drawer . The paper is light blue . I sit at the desk and think about what I want to say . I write to her about my life , what I have experienced , and how I feel about these things . I also ask her questions about how she is , and about subjects and activities that interest her . When I am finished , I sign the letter . I lick the flap and seal the envelope . Then I write her address on the front of the envelope and write my return address on the upper left corner . I place a stamp on the upper right corner . Question: When will they use the pen? Option1: when putting the stamp on Option2: When they write the letter.
Output (English): When they write the letter.