Question: who did lowell hire to work in his factory
[{'answer': 'young female workers', 'provenance': [{'wikipedia_id': '7551781', 'title': 'Lowell mill girls', 'start_paragraph_id': 1, 'start_character': 27, 'end_paragraph_id': 1, 'end_character': 47, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7551781', 'title': 'Lowell mill girls', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 502, 'bleu_score': 0.9014719980185971, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16128362573730158637}, 'section': 'Section::::Abstract.'}]}]