Question: where do plasma cells come from and what is their function
[{'answer': 'the bone marrow', 'provenance': [{'wikipedia_id': '926954', 'title': 'Plasma cell', 'start_paragraph_id': 1, 'start_character': 129, 'end_paragraph_id': 1, 'end_character': 144, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'produce antibody molecules', 'provenance': [{'wikipedia_id': '926954', 'title': 'Plasma cell', 'start_paragraph_id': 1, 'start_character': 527, 'end_paragraph_id': 1, 'end_character': 553, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '926954', 'title': 'Plasma cell', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 614, 'bleu_score': 0.607881271041239, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8611994517577745638}, 'section': 'Section::::Abstract.'}]}]