When link paths are used in the fields parameter, values can be filtered using a WHERE expression. For example, consider this URI query:.../_query?q=Size>1000&f=InternalRecipients.WHERE(Person.Department:support).../_query?q=Size>1000&f=InternalRecipients.Person.WHERE(Department:support).OfficeThis returns InternalRecipients.Person.Office values for each message but only for InternalRecipients.Person objects whose Department contains the term “support”.