Question: what is the symbol of zeus the greek god
[{'answer': 'Thunderbolt', 'provenance': [{'wikipedia_id': '34398', 'title': 'Zeus', 'start_paragraph_id': 3, 'start_character': 372, 'end_paragraph_id': 3, 'end_character': 383, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'eagle', 'provenance': [{'wikipedia_id': '34398', 'title': 'Zeus', 'start_paragraph_id': 3, 'start_character': 385, 'end_paragraph_id': 3, 'end_character': 390, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'bull', 'provenance': [{'wikipedia_id': '34398', 'title': 'Zeus', 'start_paragraph_id': 3, 'start_character': 392, 'end_paragraph_id': 3, 'end_character': 396, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'oak', 'provenance': [{'wikipedia_id': '34398', 'title': 'Zeus', 'start_paragraph_id': 3, 'start_character': 402, 'end_paragraph_id': 3, 'end_character': 405, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]