Key legal question
What is the standard of proof for the insured event under insurance law?
Extracted holding
The insured must prove the occurrence of the insured event with predominating probability; if the insurer raises serious doubts through counter-proof, the main proof fails.
Extracted reasoning
The court restated Art. 8 ZGB and insurance-specific proof rules: the claimant bears the burden for the insured event, but due to typical evidentiary difficulties a reduced standard of predominating probability applies. Counter-proof by the insurer need only shake the main proof, not prove the opposite version.