Question: in 1938 westinghouse created elektro. what was elektro
[{'answer': 'a robot', 'provenance': [{'wikipedia_id': '1490736', 'title': 'Elektro', 'start_paragraph_id': 1, 'start_character': 27, 'end_paragraph_id': 1, 'end_character': 34, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1490736', 'title': 'Elektro', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 681, 'bleu_score': 0.9542174745769371, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13872379460069361970}, 'section': 'Section::::Abstract.'}]}]