Kernrechtsfrage
Whether the complaint sufficiently challenged both the main and alternative grounds of the cantonal judgment
Extrahierter Entscheid
The sufficiency of the reasoning was left open because the complaint failed on the merits in any event.
Extrahierte Begründung
When a judgment rests on alternative grounds, the appellant must attack each of them under Art. 42(2) BGG; the filing focused mainly on the sham-marriage finding.