How to put dcterms:contributor using OSLC

Hi,

I tried to put dcterms:contributor below but I not put the contributer only.
Other items was put.
in the workitem.

How should I do?

The query I tried:

1.
<oslc_cm:ChangeRequest xmlns:oslc_cm="URL" ...>
...
<dcterms:contributor rdf:about="https://URL:9443/ccm/oslc/users/_W0HYMJC_EeCyTdMl-XYmAQ"><dcterms:contributor />
...
</oslc_cm:ChangeRequest>

2.
<oslc_cm:ChangeRequest xmlns:oslc_cm="URL" ...>
...
<dcterms:contributor rdf:resource="https://URL:9443/ccm/oslc/users/_W0HYMJC_EeCyTdMl-XYmAQ"><dcterms:contributor />
...
</oslc_cm:ChangeRequest>


3.
<oslc_cm:ChangeRequest xmlns:oslc_cm="URL" ...>
...
<dcterms:contributor>{foaf:name=Name}<dcterms:contributor />
...
</oslc_cm:ChangeRequest>