Question: who played dumbledore in the first two movies
[{'answer': 'Richard St John Harris', 'provenance': [{'wikipedia_id': '138483', 'title': 'Richard Harris', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '138483', 'title': 'Richard Harris', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 927, 'bleu_score': 0.812241999457297, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10247099594462777673}, 'section': 'Section::::Abstract.'}]}]