Question: what breed of horse is joey in war horse
[{'answer': 'a bay Thoroughbred', 'provenance': [{'wikipedia_id': '27754718', 'title': 'War Horse (film)', 'start_paragraph_id': 1, 'start_character': 510, 'end_paragraph_id': 1, 'end_character': 528, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]