Question: who played the blue ranger in power rangers
[{'answer': 'Yost', 'provenance': [{'wikipedia_id': '607110', 'title': 'David Yost', 'start_paragraph_id': 0, 'start_character': 6, 'end_paragraph_id': 0, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '607110', 'title': 'David Yost', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 656, 'bleu_score': 0.9008496860956791, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5399319354177746680}, 'section': 'Section::::Career.\n'}]}]