Question: where did serena van der woodsen go to college
[{'answer': 'Columbia', 'provenance': [{'wikipedia_id': '2238909', 'title': 'Serena van der Woodsen', 'start_paragraph_id': 27, 'start_character': 105, 'end_paragraph_id': 27, 'end_character': 113, 'bleu_score': 1.0, 'section': 'Section::::Television series.:Season 4.\n'}]}, {'provenance': [{'wikipedia_id': '2238909', 'title': 'Serena van der Woodsen', 'start_paragraph_id': 28, 'start_character': 0, 'end_paragraph_id': 28, 'end_character': 993, 'bleu_score': 0.9876155018005031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16374717474985293408}, 'section': 'Section::::Television series.:Season 4.\n'}]}]