Question: what are the three major types of joints in the human body
[{'answer': 'fibrous joint', 'provenance': [{'wikipedia_id': '210242', 'title': 'Joint', 'start_paragraph_id': 1, 'start_character': 690, 'end_paragraph_id': 1, 'end_character': 703, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'cartilaginous joint', 'provenance': [{'wikipedia_id': '210242', 'title': 'Joint', 'start_paragraph_id': 11, 'start_character': 12, 'end_paragraph_id': 11, 'end_character': 31, 'bleu_score': 1.0, 'section': 'Section::::Classification.:Structural classification (binding tissue).\n'}]}, {'answer': 'synovial joint', 'provenance': [{'wikipedia_id': '210242', 'title': 'Joint', 'start_paragraph_id': 12, 'start_character': 12, 'end_paragraph_id': 12, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Classification.:Structural classification (binding tissue).\n'}]}]