Question: who wrote the book girl on a train
[{'answer': 'Paula Hawkins', 'provenance': [{'wikipedia_id': '46461040', 'title': 'The Girl on the Train (novel)', 'start_paragraph_id': 1, 'start_character': 79, 'end_paragraph_id': 1, 'end_character': 92, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '46461040', 'title': 'The Girl on the Train (novel)', 'start_paragraph_id': 1, 'start_character': 27, 'end_paragraph_id': 1, 'end_character': 604, 'bleu_score': 0.7047363113657871, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16649641016519266275}, 'section': 'Section::::Abstract.'}]}]