org-entry-property-inherited-from
org-entry-property-inherited-from is a variable defined in `org.el
'.
Its value is #Documentation: Marker pointing to the entry from where a property was inherited. Each call to `org-entry-get-with-inheritance' will set this marker to the location of the entry where the inheritance search matched. If there was no match, the marker will point nowhere. Note that also `org-entry-get' calls this function, if the INHERIT flag is set.