Question: who does achilles fight in the beginning of troy
[{'answer': "Thessaly 's champion", 'provenance': [{'wikipedia_id': '323715', 'title': 'Troy (film)', 'start_paragraph_id': 4, 'start_character': 164, 'end_paragraph_id': 4, 'end_character': 186, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '323715', 'title': 'Troy (film)', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 918, 'bleu_score': 0.558382728192362, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18388169858381919150}, 'section': 'Section::::Plot.\n'}]}]