Question: who received the democratic nomination for president in 1988
[{'answer': 'Michael Dukakis', 'provenance': [{'wikipedia_id': '39531', 'title': '1988 United States presidential election', 'start_paragraph_id': 1, 'start_character': 246, 'end_paragraph_id': 1, 'end_character': 261, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]