added license information

Change-Id: I10be517318c7969f540e7c899d3f636203260c57
updated license information

Change-Id: Id7573e203c365dd43e9128175121698d0e02fba3
Use rdfs:Class as type for sub-classes of RDFS classes.

Change-Id: I16265c41bcc7a08da7f042b9de8eb4b30f0a29da