Question: where are lymph nodes most concentrated in the body
[{'answer': 'near and within the trunk', 'provenance': [{'wikipedia_id': '82342', 'title': 'Lymph node', 'start_paragraph_id': 22, 'start_character': 67, 'end_paragraph_id': 22, 'end_character': 92, 'bleu_score': 1.0, 'section': 'Section::::Structure.:Location.\n'}]}, {'provenance': [{'wikipedia_id': '82342', 'title': 'Lymph node', 'start_paragraph_id': 22, 'start_character': 0, 'end_paragraph_id': 22, 'end_character': 582, 'bleu_score': 0.9802931511945101, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13569629598844092135}, 'section': 'Section::::Structure.:Location.\n'}]}]