Question: who became a spokesperson against the war in vietnam
[{'answer': 'James William Fulbright', 'provenance': [{'wikipedia_id': '333951', 'title': 'J. William Fulbright', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '333951', 'title': 'J. William Fulbright', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 756, 'bleu_score': 0.9598415906376221, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11239912900509561698}, 'section': 'Section::::Abstract.'}]}]