{"answers": "C", "options": ["f : it 's a lecture about exhibition .", "f : it 's a lecture about air pollution . so let 's go to see the exhibition .", "f : it 's a lecture about environmental protection . so let 's go to see the exhibition .", "f : it 's a lecture about environmental protection . let 's go to see a film over there ."], "article": "f : we 're going to listen to a lecture about environmental protection . m : really ? i thought we 'd go to see an exhibition .", "id": "train_5716"}