As evidenced below, the Mapper system isn't infallible. In such instances you must tag the citation manually.
Tagging Mandates: Automated Tagging
To tag a term follow these steps.

1. Remove any tags from the desired term phrase
2. Highlight the term phase in the gray text box
3. Click the TAG SELECTED TEXT button.
4. Select the appropriate term phrase designation from the dropdown list. Read carefully, as with the example below you may be able to tag a term as a noun OR a verb. Selecting the wrong designator will not allow you to select the correct definition.

Tagging Mandates: Term Phrase Designation