Question: which soccer club of india won the federation cup held in december 2008
[{'answer': 'Mohun Bagan', 'provenance': [{'wikipedia_id': '28541217', 'title': 'Federation Cup (India)', 'start_paragraph_id': 2, 'start_character': 66, 'end_paragraph_id': 2, 'end_character': 77, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]