Question: when did the first christmas tree come about
[{'answer': 'around 1600', 'provenance': [{'wikipedia_id': '7770', 'title': 'Christmas tree', 'start_paragraph_id': 14, 'start_character': 112, 'end_paragraph_id': 14, 'end_character': 123, 'bleu_score': 1.0, 'section': 'Section::::History.:Possible predecessors.\n'}]}, {'provenance': [{'wikipedia_id': '7770', 'title': 'Christmas tree', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 635, 'bleu_score': 0.8971005329045191, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1388874472250834942}, 'section': 'Section::::History.:Possible predecessors.\n'}]}]