Question: who won the football league championship in 1968
[{'answer': 'Manchester City', 'provenance': [{'wikipedia_id': '16454459', 'title': '1967–68 Football League', 'start_paragraph_id': 2, 'start_character': 30, 'end_paragraph_id': 2, 'end_character': 45, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]