AvsAn (nuget): Find the english language indeterminate article ('a' or 'an') for a word.  Based on real usage patterns extracted from the wikipedia text dump; can therefore even deal with tricky edge cases such as acronyms (FIAT vs. FAA, NASA vs. NSA) and odd symbols.  (Requires .NET Core 1.0 or .NET 4.5)
Keywords: english|NLP|text-processing|library|indeterminate-article|AvsAn|an|a-vs-an