"Party who assists with the generation of the resource other than the principal investigator. This can be a person who has been involved in making the measurements or processing the data, but who is either not part of the institution responsible for the measurement or who has “contributed” only temporarily. One situation we have encountered in TOAR, where nomination of collaborators makes sense is when university researchers assist government agencies in preparing their data for submission to the TOAR database."(xsd:string)