Task: Question Answering
Input (English): Passage: My grand father wears a button down shirt every day to work . Yesterday , he came home and he had lost a button on his shirt . I sew a lot , and am very crafty at fixing things , and because of my craftiness he asked me to fix and sew a new button back on his shirt . The other buttons were all white and about half an inch in size , so I dug through a container bin of buttons I had and found a button which was similar in appearance . I had to use white thread to match the button and it took a while to get the thread through the eye of the needle . Once I got the thread through the eye of the needle , I baste stitched the button onto the shirt where the missing button was before , and sewed through all four of the button holes tightening the button to the shirt . I then tied off the stitches and cut the excess thread , before giving the shirt back to my grand father . Question: When did they replace the missing button? Option1: the following day Option2: yesterday
Output (English): yesterday