Question: who was the first chemist to lead a team that made elements that did not occur naturally
[{'answer': 'Albert Ghiorso', 'provenance': [{'wikipedia_id': '29365', 'title': 'Synthetic element', 'start_paragraph_id': 11, 'start_character': 119, 'end_paragraph_id': 11, 'end_character': 133, 'bleu_score': 1.0, 'section': 'Section::::History.:Curium.\n'}]}, {'provenance': [{'wikipedia_id': '29365', 'title': 'Synthetic element', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 427, 'bleu_score': 0.608512817756931, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10247666640445247700}, 'section': 'Section::::History.:Eight others.\n'}]}]