Question: who played celeborn in lord of the rings
[{'answer': 'Marton Paul Csokas', 'provenance': [{'wikipedia_id': '870982', 'title': 'Marton Csokas', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '870982', 'title': 'Marton Csokas', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 465, 'bleu_score': 0.566797627037889, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4104582337614525487}, 'section': 'Section::::Abstract.'}]}]