edit: also see:
edit: notes from interactions with Dr. Verborgh :
"The generated n3-browser.js is standalone and not for usage with require.
To obtain a library for usage with require, you have to use a utility such as browserify (http://browserify.org/).
N3.js is designed for compatibility with browserify. Then you can continue your exact use case.
"This gives in the browser:
Indeed, that's how n3-browser.js works:
it exposes a global N3 object."