Question: who does serena van der woodsen marry in gossip girl
[{'answer': 'Dan', 'provenance': [{'wikipedia_id': '2238909', 'title': 'Serena van der Woodsen', 'start_paragraph_id': 12, 'start_character': 717, 'end_paragraph_id': 12, 'end_character': 720, 'bleu_score': 1.0, 'section': 'Section::::Television series.:Season 1.\n'}]}, {'provenance': [{'wikipedia_id': '2238909', 'title': 'Serena van der Woodsen', 'start_paragraph_id': 47, 'start_character': 0, 'end_paragraph_id': 47, 'end_character': 122, 'bleu_score': 0.9067110266941041, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13405708716156068086}, 'section': 'Section::::Television series.:Season 6.\n'}]}]