No Untyped references
Any reference to a URI in any context other than as the object of an annotation property must have a type triple for that URI. https://github.com/dallemang/fibo/blob/da/hygiene2/etc/testing/hygiene/testHygiene1.sq
Crossing domains / ranges
If one property is a sub of another, then the domains (respectively ranges) should not be subClasses in the opposite direction. https://github.com/dallemang/fibo/blob/da/hygiene2/etc/testing/hygiene/testHygiene2.sq
Labels and Defintions
Every Class and Property defined in FIBO must have an rdfs:label and a skos:definition
Ontology Metadata
Every Ontology defined in FIBO has a label, copyright, license.
Definition Format
The definition is made up of one or more full sentences, beginning with an upper case letter and ending with a period.