Question: who played the green hornet in the tv series
[{'answer': 'Van Williams', 'provenance': [{'wikipedia_id': '25761420', 'title': 'The Green Hornet (TV series)', 'start_paragraph_id': 1, 'start_character': 111, 'end_paragraph_id': 1, 'end_character': 123, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25761420', 'title': 'The Green Hornet (TV series)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 176, 'bleu_score': 0.5980493983713601, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15223786460289217209}, 'section': 'Section::::Abstract.'}]}]