Question: i have a dream speech is what kind of writing
[{'answer': 'rhetoric', 'provenance': [{'wikipedia_id': '18948383', 'title': 'I Have a Dream', 'start_paragraph_id': 13, 'start_character': 34, 'end_paragraph_id': 13, 'end_character': 42, 'bleu_score': 1.0, 'section': 'Section::::Speech.\n'}]}, {'provenance': [{'wikipedia_id': '18948383', 'title': 'I Have a Dream', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 1181, 'bleu_score': 0.9896100372834851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1856330905784084884}, 'section': 'Section::::Speech.\n'}]}]