Q. The word I searched for doesn't appear in its example sentence.
A. WordNet is organized by the concept of synonym sets (synsets), groups of words that are roughly synonymous in a given context. The glossary definition and the example sentences are shared among all synonyms in a given synset. This is why you'll find, for example, in the definitional gloss for "insure" the example sentence: "This nest egg will ensure a nice retirement for us".
Q. How do I set an environment variable?
A. For instructions on how to set an environment variable in Windows, please see: Google search for: site:microsoft.com Windows environment variables or a page about environment variables
The variables you'll want to set for WordNet are:
|Name||Value||Example (Linux/*nix)||Example (Windows)|
|WNHOME||WordNet's home directory||/usr/local/WordNet-3.0||C:\Program Files\WordNet\2.1|
|WNSEARCHDIR||WordNet's dict directory||/usr/local/WordNet-3.0/dict||C:\Program Files\WordNet\2.1\dict|