TASK DEFINITION: Given two noun phrases (arguments) and relationship between them, form a sentence that expresses theses arguments with the given relationship.
PROBLEM: Relationship: 'be head of', Argument/Subject 1: 'president', Argument/Subject 2: 'executive'

SOLUTION: 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 .

PROBLEM: Relationship: 'turn to', Argument/Subject 1: 'bush', Argument/Subject 2: 'iraq'

SOLUTION: In 2002 the Bush administration turned its attention to Iraq , claiming that the country supported terrorist organizations and that it illegally possessed weapons of mass destruction .

PROBLEM: Relationship: 'be country in', Argument/Subject 1: 'iceland', Argument/Subject 2: 'europe'

SOLUTION:
Iceland , officially known as the Republic of Iceland is an island country of Northern Europe located in the North Atlantic Ocean between continental Europe and Greenland .