Question: what is the definition of a master craftsman
[{'answer': 'a member of a guild', 'provenance': [{'wikipedia_id': '628336', 'title': 'Master craftsman', 'start_paragraph_id': 1, 'start_character': 89, 'end_paragraph_id': 1, 'end_character': 108, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]