Question: what is the name of the small piece of cartilage at the bottom of the sternum
[{'answer': 'xiphoid process', 'provenance': [{'wikipedia_id': '231984', 'title': 'Xiphoid process', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '231984', 'title': 'Xiphoid process', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 326, 'bleu_score': 0.913499617140693, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1311924494754616734}, 'section': 'Section::::Abstract.'}]}]