events in SBI (including birth and death events) do contain a crm:P4_has_time-span relation, but the object of that triple does not contain any dates.
E.g. the path should be birth_event -> crm:P4_has_time-span -> crm:P82a_begin_of_the_begin -> "1884-01-01"^^xsd:date
Additionally the time-span node should be of type E52_Time-Span
events in SBI (including birth and death events) do contain a
crm:P4_has_time-spanrelation, but the object of that triple does not contain any dates. E.g. the path should bebirth_event->crm:P4_has_time-span->crm:P82a_begin_of_the_begin->"1884-01-01"^^xsd:dateAdditionally the time-span node should be of type E52_Time-Span