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: 'be bishop of', Argument/Subject 1: 'pope', Argument/Subject 2: 'rome'

SOLUTION: The Bishops of Rome petitioned Pope Clement VIII to forbid coffee drinking to all of Christendom .

PROBLEM: Relationship: 'report to', Argument/Subject 1: 'director', Argument/Subject 2: 'congress'

SOLUTION:
The Director shall report to the Congress annually on the use of statutory invention registrations .