Question: where did the battle of cold harbor take place
[{'answer': 'near Mechanicsville , Virginia', 'provenance': [{'wikipedia_id': '48965', 'title': 'Battle of Cold Harbor', 'start_paragraph_id': 1, 'start_character': 67, 'end_paragraph_id': 1, 'end_character': 97, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '48965', 'title': 'Battle of Cold Harbor', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 506, 'bleu_score': 0.9768747032089851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6221886604289716485}, 'section': 'Section::::Abstract.'}]}]