Question: who plays jason west in gavin and stacey
[{'answer': 'Robert Wilfort', 'provenance': [{'wikipedia_id': '25831483', 'title': 'List of Gavin & Stacey characters', 'start_paragraph_id': 14, 'start_character': 24, 'end_paragraph_id': 14, 'end_character': 38, 'bleu_score': 1.0, 'section': 'Section::::Characters.:Other characters.\n'}]}]