Question: who joined america after the battle of saratoga
[{'answer': 'France', 'provenance': [{'wikipedia_id': '67425', 'title': 'Battles of Saratoga', 'start_paragraph_id': 3, 'start_character': 633, 'end_paragraph_id': 3, 'end_character': 639, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '67425', 'title': 'Battles of Saratoga', 'start_paragraph_id': 55, 'start_character': 0, 'end_paragraph_id': 55, 'end_character': 1018, 'bleu_score': 0.9569062439089551, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1812340199605855359}, 'section': 'Section::::Aftermath.:French aid.\n'}]}]