Question: what episode in the office is jim and pam's wedding
[{'answer': "`` Niagara ''"}, {'provenance': [{'wikipedia_id': '24468714', 'title': 'Niagara (The Office)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 386, 'bleu_score': 0.876710523339815, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10408717197755388464}, 'section': 'Section::::Abstract.'}]}]