Question: when do they light the tree at rockerfeller center
[{'answer': 'a Wednesday after Thanksgiving', 'provenance': [{'wikipedia_id': '3313445', 'title': 'Rockefeller Center Christmas Tree', 'start_paragraph_id': 1, 'start_character': 356, 'end_paragraph_id': 1, 'end_character': 386, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3313445', 'title': 'Rockefeller Center Christmas Tree', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 602, 'bleu_score': 0.8514410718855481, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8806883095634174522}, 'section': 'Section::::Abstract.'}]}]