Template:Invert-property
From The Embassy of Good Science
This template takes a property name and its inverse property name. It queries for the inverse property name and produces wiki text with the inverted annotations.
Usage: {{Invert-property|Derived property name|Its inverse property name}}
This hides the annotation by specifying blank as the alternate text. Since "| " in a template confuses parsing, it uses a subtemplate Template:Invert-property/Separator for the separator.
See California for use of this template.
(Credit goes to Semantic MediaWiki user DanTMan for this technique.)
