Question: when do they light the tree in dc
[{'answer': 'early December', 'provenance': [{'wikipedia_id': '8579601', 'title': 'National Christmas Tree (United States)', 'start_paragraph_id': 31, 'start_character': 245, 'end_paragraph_id': 31, 'end_character': 259, 'bleu_score': 1.0, 'section': 'Section::::Post-War National Christmas Trees and the Pageant of Peace.:Development of the Pageant of Peace and Pathway of Peace.\n'}]}, {'provenance': [{'wikipedia_id': '8579601', 'title': 'National Christmas Tree (United States)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 683, 'bleu_score': 0.9616531359700091, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 122204272312476762}, 'section': 'Section::::Abstract.'}]}]