Question: who propounded the mutation theory of organic evolution
[{'answer': 'Hugo Marie de Vries ForMemRS', 'provenance': [{'wikipedia_id': '665725', 'title': 'Hugo de Vries', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 19, 'bleu_score': 0.668740304976422, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '665725', 'title': 'Hugo de Vries', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 352, 'bleu_score': 0.8279480216928901, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12982991511104284408}, 'section': 'Section::::Abstract.'}]}]