Question: who built the gerald r ford aircraft carrier
[{'answer': 'Newport News Shipbuilding', 'provenance': [{'wikipedia_id': '569669', 'title': 'Gerald R. Ford-class aircraft carrier', 'start_paragraph_id': 52, 'start_character': 0, 'end_paragraph_id': 52, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::Development.:3D computer-aided design.\n'}]}]