Question: what muscle in the upper body covers the upper chest
[{'answer': 'pectoralis major', 'provenance': [{'wikipedia_id': '755375', 'title': 'Pectoralis major', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '755375', 'title': 'Pectoralis major', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 520, 'bleu_score': 0.638826228694742, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3966947851556865299}, 'section': 'Section::::Abstract.'}]}]