guest15817_0_0_16 has no parents. It was generated at random.
100 *(divide(numbers("per") if logn(numbers('epe')) > logn(numbers('epe')) if numbers('xry') > numbers('epe') else numbers("per") else numbers('epe'), numbers('epe') if numbers("per") > logn(numbers('epe')) else numbers('xry')))
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