Question: which pair of ribs articulates with the sternum at the sternal angle
[{'answer': 'the second ribs', 'provenance': [{'wikipedia_id': '2910619', 'title': 'Sternal angle', 'start_paragraph_id': 4, 'start_character': 143, 'end_paragraph_id': 4, 'end_character': 158, 'bleu_score': 1.0, 'section': 'Section::::Anatomy.\n'}]}, {'provenance': [{'wikipedia_id': '2910619', 'title': 'Sternal angle', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 305, 'bleu_score': 0.96188712955549, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2865821134593935892}, 'section': 'Section::::Anatomy.\n'}]}]