Question: who wrote the book how to solve it which outlines a general approach to problem solving
[{'answer': 'mathematician George Pólya', 'provenance': [{'wikipedia_id': '320319', 'title': 'How to Solve It', 'start_paragraph_id': 1, 'start_character': 44, 'end_paragraph_id': 1, 'end_character': 70, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '320319', 'title': 'How to Solve It', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 108, 'bleu_score': 0.8914703664390791, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7065625485869390100}, 'section': 'Section::::Abstract.'}]}]