Question: how many groups are there in the fifa world cup
[{'answer': '8', 'provenance': [{'wikipedia_id': '13327177', 'title': '2018 FIFA World Cup', 'start_paragraph_id': 0, 'start_character': 3, 'end_paragraph_id': 0, 'end_character': 4, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '13327177', 'title': '2018 FIFA World Cup', 'start_paragraph_id': 56, 'start_character': 0, 'end_paragraph_id': 56, 'end_character': 185, 'bleu_score': 0.8627586293513111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9691645891156901671}, 'section': 'Section::::Teams.:Draw.\n'}]}]