Question: what was the main characteristic of post-world war ii american society
[{'answer': 'strong economic growth', 'provenance': [{'wikipedia_id': '24854552', 'title': 'Post–World War II economic expansion', 'start_paragraph_id': 1, 'start_character': 156, 'end_paragraph_id': 1, 'end_character': 178, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'unusually high and sustained growth , together with full employment'}, {'provenance': [{'wikipedia_id': '24854552', 'title': 'Post–World War II economic expansion', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15391222921879485814}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '24854552', 'title': 'Post–World War II economic expansion', 'start_paragraph_id': 84, 'start_character': 0, 'end_paragraph_id': 84, 'end_character': 540, 'bleu_score': 0.978375183951072, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15391222921879485814}, 'section': 'Section::::Specific countries.:United States.\n'}]}, {'provenance': [{'wikipedia_id': '24854552', 'title': 'Post–World War II economic expansion', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 763, 'bleu_score': 0.8087153880173951, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15391222921879485814}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '24854552', 'title': 'PostWorld War II economic expansion', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The postWorld War II economic expansion, also known as the golden age of capitalism and the postwar economic boom or simply the long boom, was a period of strong economic growth beginning after World War II and ending with the 197375 recession.', 'The postWorld War II economic expansion, also known as the golden age of capitalism and the postwar economic boom or simply the long boom, was a period of strong economic growth beginning after World War II and ending with the 197375 recession.', 'The postWorld War II economic expansion, also known as the golden age of capitalism and the postwar economic boom or simply the long boom, was a period of strong economic growth beginning after World War II and ending with the 197375 recession']}}]}]