Question: where does lymph fluid drain in order to go back into the cardiovascular system
[{'answer': 'the subclavian veins', 'provenance': [{'wikipedia_id': '641160', 'title': 'Lymphatic vessel', 'start_paragraph_id': 1, 'start_character': 972, 'end_paragraph_id': 1, 'end_character': 992, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '641160', 'title': 'Lymphatic vessel', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1034, 'bleu_score': 0.9642074346136481, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18139499363694187188}, 'section': 'Section::::Abstract.'}]}]