Question: who played the first kryten in red dwarf
[{'answer': 'David Ross', 'provenance': [{'wikipedia_id': '625067', 'title': 'Kryten', 'start_paragraph_id': 3, 'start_character': 103, 'end_paragraph_id': 3, 'end_character': 113, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]