Filter un-interesting SemMed results

[b]

There are lost of results like "process of Human" or "occurs in Mouse" that, though perhaps computationally useful, are not of interest to human browsers. Implement a database-level filter on these.

Also, when executing a search over the concepts (initial entry point), do not show concept results that have no triple associated with them.

1. Define query patterns that capture a significant fraction of the uninteresting cases.
2. Apply these patterns to either remove the rows from the production database or tag them such that they can be avoided in UI-driven queries.