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A non color changing tourmaline and a color change garnet from Kenja / Chavia - YouTube
https://www.youtube.com/watch?v=BmKS3Fh4PFU&translated=1
The best color change in the natural gemstones. The tourmaline does not change the color. The extremely rare garnet changes its color very strongly. Visit mo...
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Generating and Querying Semantic Metadata and Ontologies - YouTube
https://www.youtube.com/watch?v=1YhE9WVZ55c
Google Tech Talks June 21, 2007 ABSTRACT Semantic technologies aim at providing machine interpretable descriptions of information and services. Ontologies an...