Questione giuridica chiave
Whether the new documents filed before the Federal Supreme Court were admissible.
Decisione estratta
The documents were inadmissible because the appellants could and should have submitted them already in the cantonal appeal proceedings; the appellate judgment did not newly prompt them.
Motivazione estratta
Under Art. 99(1) BGG, new facts and evidence are allowed only if the lower-court decision itself gives rise to them. That condition was not met.