Question: which country has played the most world cup matches
[{'answer': 'Brazil', 'provenance': [{'wikipedia_id': '3482531', 'title': 'National team appearances in the FIFA World Cup', 'start_paragraph_id': 2, 'start_character': 89, 'end_paragraph_id': 2, 'end_character': 95, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3482531', 'title': 'National team appearances in the FIFA World Cup', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 584, 'bleu_score': 0.9461462299376011, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17134913301559747981}, 'section': 'Section::::Abstract.'}]}]