Further reading

• If you are new to NLP and want to learn more about it, you can start with Natural Language Processing Fundamentals, D. Gunning and S. Ghosh, Packt Publishing.

• Then, consider checking out Hands-On Natural Language Processing with Python, R. Shanmugamani and R. Arumugam, Packt Publishing.
• W3C specifications:
• RDF: https://www.w3.org/TR/rdf-concepts/
• SPARQL: https://www.w3.org/TR/rdf-sparql-query/
• Neural Machine Translation models used by Google Translate:
• The initial paper by Google: https://research.google/pubs/pub45610/ 
• The implementation using Tensorflow: https://github.com/tensorflow/nmt