Question: who played captain nemo in 20 000 leagues under the sea
[{'answer': 'James Mason', 'provenance': [{'wikipedia_id': '5516824', 'title': '20,000 Leagues Under the Sea (1954 film)', 'start_paragraph_id': 1, 'start_character': 267, 'end_paragraph_id': 1, 'end_character': 278, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5516824', 'title': '20,000 Leagues Under the Sea (1954 film)', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 39, 'bleu_score': 0.6147881529512641, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3796391322821177287}, 'section': 'Section::::Cast.\n'}]}]