Question: when was the house un-american activities committee formed
[{'answer': '1938', 'provenance': [{'wikipedia_id': '23758960', 'title': 'House Un-American Activities Committee', 'start_paragraph_id': 1, 'start_character': 253, 'end_paragraph_id': 1, 'end_character': 257, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23758960', 'title': 'House Un-American Activities Committee', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 540, 'bleu_score': 0.7087443980338971, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16314898896770203157}, 'section': 'Section::::Abstract.'}]}]