options: m : i do n't understand why mr.green follows sam . m : i 'm sure the man is mr.green . m : yes , mrs.green told you last week that her sister was coming . m : you are right ! mr.green said his brother left yesterday .
article: m : wait a minute , i recognized the man who 's following jack . it 's mister green . f : now i remember , mister green told me yesterday his brother was coming .