Task: Question Answering
Input (English): Passage: I was having a birthday party and wanted to invite all my family and friends so I had to make invitations . I went to the store to pick out the prettiest invitations I could find . There was so many to chose from I had to narrow down my choice .  When I got home I got the list I made of people to invite so I did not forget anyone . I got out my address book and found everyone 's address to put on the envelope . After they were collected and wrote down on the invites it was time to get stamps .  After the envelopes were done I put the invitations in them , sealed the envelope , and put a stamp on the right corner . I mailed out all the invitations and was excited for the party to come . Question: When did they fill out the envelopes? Option1: after they got their address book Option2: Before they bought the invites.
Output (English): after they got their address book