Question: where did the term hot rod come from
[{'answer': 'southern California', 'provenance': [{'wikipedia_id': '436522', 'title': 'Hot rod', 'start_paragraph_id': 10, 'start_character': 45, 'end_paragraph_id': 10, 'end_character': 64, 'bleu_score': 1.0, 'section': 'Section::::History.:1920s to 1945.\n'}]}, {'provenance': [{'wikipedia_id': '436522', 'title': 'Hot rod', 'start_paragraph_id': 10, 'start_character': 15, 'end_paragraph_id': 10, 'end_character': 584, 'bleu_score': 0.520752871462495, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5461621713298874218}, 'section': 'Section::::History.:1920s to 1945.\n'}]}, {'provenance': [{'wikipedia_id': '436522', 'title': 'Hot rod', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 334, 'bleu_score': 0.887961253516891, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5461621713298874218}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1137338', 'title': 'Kustom Kulture', 'section': 'Section::::Abstract.', 'start_paragraph_id': 3, 'end_paragraph_id': 3, 'meta': {'evidence_span': ['It was born out of the hot rod culture of Southern California', 'Southern California']}}]}, {'provenance': [{'wikipedia_id': '436522', 'title': 'Hot rod', 'section': 'Section::::History.:1920s to 1945.\n', 'start_paragraph_id': 10, 'end_paragraph_id': 10, 'meta': {'evidence_span': ['Hot rods first appeared in the late 1930s in southern California, where people raced modified cars on dry lake beds northeast of Los Angeles, under the rules of the Southern California Timing Association (SCTA), among other groups.', 'Hot rods first appeared in the late 1930s in southern California, where people raced modified cars on dry lake beds northeast of Los Angeles, under the rules of the Southern California Timing Association (SCTA), among other groups. This gained popularity after World War II, particularly in California, because many returning soldiers had received technical training. The first hot rods were old cars (most often Fords, typically Model Ts, 192831 Model As, or 1932-34 Model Bs), modified to reduce weight. Engine swaps often involved fitting the Ford flathead V8 engine (known as the "flatty") into a different car, for example the common practice in the 1940s of installing the "60 horse" version into a Jeep chassis.', 'Southern California']}}]}]