Task: Question Answering
Input (English): Passage: I recently decided I wanted to host a party at my house . I made a list of guests I thought I would like to invite . I went to the store to buy invitations and envelopes so I could send the party invitations to all the people on my guest list . Once all the invitation were inside the envelopes I sealed them by licking the envelope and folding the flap over . Next , I went to my address book and filled out all the envelopes with the addresses of my friends and family on my guest list . I went to the post office and purchased enough stamps so I could put one on each envelope . After going to the post office I put a stamp on every envelope and took them to the mailbox and lifted the flag indicating they were ready to be picked up for delivery . Question: What did they put the invitations into? Option1: envelopes Option2: mailboxes
Output (English): envelopes