Question: who wrote the book cheaper by the dozen
[{'answer': 'Frank Bunker Gilbreth , Jr.'}, {'answer': 'Ernestine Gilbreth Carey', 'provenance': [{'wikipedia_id': '26691084', 'title': 'Cheaper by the Dozen', 'start_paragraph_id': 1, 'start_character': 95, 'end_paragraph_id': 1, 'end_character': 119, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '26691084', 'title': 'Cheaper by the Dozen', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 416, 'bleu_score': 0.8995638586002741, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1355485098546076535}, 'section': 'Section::::Abstract.'}]}]