Semantic gardening

Semantic gardening can be described as activity to "garden" (or improve) the health of value statements and property declarations used within a wiki. It is part of the overall data curationCiteRef::data:curation that should be done on a wiki.

The property annotation health collects some help about how to find erroneous statements that need correction or adjustments. "Gardening" further includes to monitor things like:
 * outdated properties
 * outdated entities
 * similar properties
 * property uniqueness
 * improper annotations and failed queries
 * missing redirect annotations