Whether the insured person's disability was caused by an incapacity for work that arose during coverage under the occupational pension scheme.
It was not established with predominant probability that the incapacity for work began while the claimant was still insured by the pension fund.
The medical evidence did not show contemporaneous psychiatric incapacity during the insurance period; later retrospective opinions could not replace real-time evidence, and the claimant had substantial later periods of work and unemployment interrupting any temporal link.