Question: how many games in each world cup group
[{'answer': 'six matches', 'provenance': [{'wikipedia_id': '11370', 'title': 'FIFA World Cup', 'start_paragraph_id': 50, 'start_character': 159, 'end_paragraph_id': 50, 'end_character': 170, 'bleu_score': 1.0, 'section': 'Section::::Format.:Final tournament.\n'}]}, {'provenance': [{'wikipedia_id': '11370', 'title': 'FIFA World Cup', 'start_paragraph_id': 50, 'start_character': 0, 'end_paragraph_id': 50, 'end_character': 551, 'bleu_score': 0.9806740509884301, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7777883698558468303}, 'section': 'Section::::Format.:Final tournament.\n'}]}]