Elizabeth Dowdeswell is the Under Secretary General at the United Nations Offices at Nairobi and Executive Director of the United Nations Environment Programme.
Elizabeth Dowdeswell is not physically underneath the Secretary General at the United Nations Offices at Nairobi. 
Elizabeth Dowdeswell is not physically located underneath the Secretary General. Her work position is mentioned but it is highly unlikely that she will be physically underneath the Secretary General. The word under has been used in another context.
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