Given two noun phrases (arguments) and relationship between them, form a sentence that expresses theses arguments with the given relationship.

Relationship: 'be head of', Argument/Subject 1: 'president', Argument/Subject 2: 'executive'
The service has been dubbed Derivatives Collateral Net and automatically aggregates and nets the overall collateral obligations of its participants , explains Art Certosimo , executive vice president and head of Broker-Dealer Services at the bank .

Relationship: 'be bear in', Argument/Subject 1: 'lee', Argument/Subject 2: 'virginium'
Born Rosa Lee Davis , she attended Lumberport High School in West Virginia , completing her education at Protestant School for Nursing , Clarksburg , West Virginia , receiving her degree June 1 , 1945 .

Relationship: 'be hold in', Argument/Subject 1: 'fair', Argument/Subject 2: 'august'
Today the successful New Romney Country Fair is usually held on the first Saturday of August .