{"answers": "B", "options": ["m : really ? you mean maybe it was too clear to hear it ? but i went back to the office because i wanted to get the important things .", "m : okay , i see . you thought i would have the key . yeah , but i went back to the office because i wanted to get the important things .", "m : okay , i see . you thought i would not have the key . actually , i went back to the office because i wanted to find the lost key .", "m : okay . actually i left nothing important in my office and i went back to the office because i wanted to lock the office door ."], "article": "m : the office door was locked when i came back yesterday . i left something important in my office . why did n't you answer my phone call afterwards ? f : maybe it was too noisy to hear it . i thought you would have the key on you .", "id": "train_6253"}