…n URL at which the app may be installed, if different from the URL of the item. isBasedOn CreativeWork A resource from which this work is derived or from which it is a modification or adaptation. isBasedOnUrl CreativeWork A resource that was used in the creation of this resource.…

… it is always possible that the upstream source has a different maintainer. The isBasedOn property can be used to indicate such relationships between datasets to make the different maintenance roles clear. Similarly in the case of software, a package may have dedicated maintainer…