Bluemix Docs / Natural Language Understanding
https://console.bluemix.net/docs/services/natural-language-understanding/language-support.html#language-support

Watson API Explorer
https://watson-api-explorer.mybluemix.net/apis/natural-language-understanding-v1
https://www.ibm.com/watson/developercloud/natural-language-understanding/api/v1/

Natural Language Understanding / Demo
https://natural-language-understanding-demo.mybluemix.net/

Harness the power of cognitive data analysis in a Jupyter Notebook with PixieDust
https://developer.ibm.com/code/patterns/discover-hidden-facebook-usage-insights/

Use Node.js and Watson to detect emotion, identify entities, and discover answers
https://developer.ibm.com/code/patterns/create-cognitive-banking-chatbot/