Question: when was the first man made diamond made
[{'answer': 'around 1953'}, {'provenance': [{'wikipedia_id': '498137', 'title': 'Synthetic diamond', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 765, 'bleu_score': 0.9608889364388631, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12447017317027157007}, 'section': 'Section::::Abstract.'}]}]