Kernrechtsfrage
Whether the lower court's fact-finding on concealment and knowledge was arbitrary
Extrahierter Entscheid
The factual findings were not arbitrary; the appellants failed to show an obviously untenable assessment of the evidence.
Extrahierte Begründung
The husband knowingly withheld income; the wife could understand the form and, by signing it without checking despite knowing of the income, accepted the risk of false disclosure.