Question: where does the head of the rib articulate with
[{'answer': 'the intervertebral fibrocartilages'}, {'answer': 'the facets on the contiguous margins of the bodies of the thoracic vertebrae'}, {'provenance': [{'wikipedia_id': '6177296', 'title': 'Articulation of head of rib', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 408, 'bleu_score': 0.9070831630386871, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8215511644687891951}, 'section': 'Section::::Abstract.'}]}]