{"answers": "C", "options": ["f : it starts at 11:00 am and ends at 4:00 pm . five hours is not enough .", "f : 8 hours ? i think it 's not necessary to open such long time in paris .", "f : so the east street market opens 9 hours a day . that 's quite long .", "f : thank you for telling me that the west street market open for 9 hours a day ."], "article": "f : i 'd like to do some shopping , but i was told london is an expensive place to live . m : that 's not completely true . if you shop in the right places , you can live cheaply . here is a market list . you can buy all kinds of things in these markets had a low price . f : that 's great . m : let 's see east street market sells cheap food and clothes . it 's open from 8:00 am to 5:00 pm .", "id": "dev_21"}