Question: where is the most bacteria found in the human body
[{'answer': 'gut flora', 'provenance': [{'wikipedia_id': '205464', 'title': 'Human microbiome', 'start_paragraph_id': 54, 'start_character': 30, 'end_paragraph_id': 54, 'end_character': 39, 'bleu_score': 1.0, 'section': 'Section::::Anatomical areas.:Gastrointestinal tract.\n'}]}]