Question: where does the eurostar leave from in london
[{'answer': 'St Pancras International', 'provenance': [{'wikipedia_id': '10093', 'title': 'Eurostar', 'start_paragraph_id': 2, 'start_character': 23, 'end_paragraph_id': 2, 'end_character': 47, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '10093', 'title': 'Eurostar', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 703, 'bleu_score': 0.7946056648594351, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9659439657359936100}, 'section': 'Section::::Abstract.'}]}]