Question: who said have you no sense of decency
[{'answer': 'Joseph Nye Welch', 'provenance': [{'wikipedia_id': '1140227', 'title': 'Joseph N. Welch', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1140227', 'title': 'Joseph N. Welch', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 522, 'bleu_score': 0.976327165973018, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12060166450048292854}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1140227', 'title': 'Joseph N. Welch', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['His confrontation with McCarthy during the hearings, in which he famously asked McCarthy "At long last, have you left no sense of decency?" is seen as a turning point in the history of McCarthyism.', 'Joseph Nye Welch (October 22, 1890 October 6, 1960) was an American lawyer who served as the chief counsel for the United States Army while it was under investigation for Communist activities by Senator Joseph McCarthy\'s Senate Permanent Subcommittee on Investigations, an investigation known as the ArmyMcCarthy hearings. His confrontation with McCarthy during the hearings, in which he famously asked McCarthy "At long last, have you left no sense of decency?" is seen as a turning point in the history of McCarthyism.', 'Joseph Nye Welch (October 22, 1890 October 6, 1960) was an American lawyer who served as the chief counsel for the United States Army while it was under investigation for Communist activities by Senator Joseph McCarthy\'s Senate Permanent Subcommittee on Investigations, an investigation known as the ArmyMcCarthy hearings. His confrontation with McCarthy during the hearings, in which he famously asked McCarthy "At long last, have you left no sense of decency?" is seen as a turning point in the history of McCarthyism.']}}]}]