Question: what do the four candles of advent symbolise
[{'answer': 'hope', 'provenance': [{'wikipedia_id': '399905', 'title': 'Advent wreath', 'start_paragraph_id': 10, 'start_character': 126, 'end_paragraph_id': 10, 'end_character': 130, 'bleu_score': 1.0, 'section': 'Section::::Forms of the Advent wreath.\n'}]}, {'answer': 'peace', 'provenance': [{'wikipedia_id': '399905', 'title': 'Advent wreath', 'start_paragraph_id': 10, 'start_character': 512, 'end_paragraph_id': 10, 'end_character': 517, 'bleu_score': 1.0, 'section': 'Section::::Forms of the Advent wreath.\n'}]}, {'answer': 'joy', 'provenance': [{'wikipedia_id': '399905', 'title': 'Advent wreath', 'start_paragraph_id': 10, 'start_character': 530, 'end_paragraph_id': 10, 'end_character': 533, 'bleu_score': 1.0, 'section': 'Section::::Forms of the Advent wreath.\n'}]}, {'answer': 'love', 'provenance': [{'wikipedia_id': '399905', 'title': 'Advent wreath', 'start_paragraph_id': 10, 'start_character': 57, 'end_paragraph_id': 10, 'end_character': 61, 'bleu_score': 1.0, 'section': 'Section::::Forms of the Advent wreath.\n'}]}, {'provenance': [{'wikipedia_id': '399905', 'title': 'Advent wreath', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 878, 'bleu_score': 0.986253478180058, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 835357795039002206}, 'section': 'Section::::Forms of the Advent wreath.\n'}]}]