Question: where is the thymus gland located in the human body
[{'answer': 'anterior superior mediastinum', 'provenance': [{'wikipedia_id': '56265', 'title': 'Thymus', 'start_paragraph_id': 1, 'start_character': 297, 'end_paragraph_id': 1, 'end_character': 326, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'in front of the heart', 'provenance': [{'wikipedia_id': '56265', 'title': 'Thymus', 'start_paragraph_id': 1, 'start_character': 328, 'end_paragraph_id': 1, 'end_character': 349, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'behind the sternum', 'provenance': [{'wikipedia_id': '56265', 'title': 'Thymus', 'start_paragraph_id': 1, 'start_character': 354, 'end_paragraph_id': 1, 'end_character': 372, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '56265', 'title': 'Thymus', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 923, 'bleu_score': 0.9866213202385071, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1993343018191276869}, 'section': 'Section::::Abstract.'}]}]