Data based on @zazuko/vocabularies
Defined by xsd:
Click to Copyxsd:yearMonthDuration
Click to Copyhttp://www.w3.org/2001/XMLSchema#yearMonthDuration
`yearMonthDuration` is a datatype _derived_ from `duration` by restricting its _lexical representations_ to instances of `yearMonthDurationLexicalRep`. The _value space_ of `yearMonthDuration` is therefore that of `duration` restricted to those whose `seconds` property is `0`. This results in a `duration` datatype which is totally ordered.