You could join the enumerations data set to the work items data set, but that might be unwieldy if the work items data set is also joined to another data set.

In SQL terms, this merge calls for an outer join, which matches each row in the work items data set to the single row in the states data set with a matching state ID.

Drag the parent work items data set to the report, and add an extra column in which to show the child work items.