Question: who played obi wan in a new hope
[{'answer': 'Alec Guinness', 'provenance': [{'wikipedia_id': '56196', 'title': 'Obi-Wan Kenobi', 'start_paragraph_id': 1, 'start_character': 148, 'end_paragraph_id': 1, 'end_character': 161, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Ewan McGregor', 'provenance': [{'wikipedia_id': '56196', 'title': 'Obi-Wan Kenobi', 'start_paragraph_id': 1, 'start_character': 258, 'end_paragraph_id': 1, 'end_character': 271, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '56196', 'title': 'Obi-Wan Kenobi', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 471, 'bleu_score': 0.666861880284168, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3922180990064090813}, 'section': 'Section::::Abstract.'}]}]