Question: who tells harry potter that he is a wizard in the harry potter series
[{'answer': 'Rubeus Hagrid', 'provenance': [{'wikipedia_id': '727836', 'title': 'Harry Potter (character)', 'start_paragraph_id': 10, 'start_character': 195, 'end_paragraph_id': 10, 'end_character': 208, 'bleu_score': 1.0, 'section': 'Section::::"Harry Potter" books.:"Harry Potter and the Philosopher\'s Stone".\n'}]}, {'provenance': [{'wikipedia_id': '727836', 'title': 'Harry Potter (character)', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 1159, 'bleu_score': 0.9822289660879701, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3093971149927753494}, 'section': 'Section::::"Harry Potter" books.:"Harry Potter and the Philosopher\'s Stone".\n'}]}]