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

question:
Relationship: 'be bear in', Argument/Subject 1: 'peter', Argument/Subject 2: 'london'
answer:
Born in London , England , Peter Robson moved to Canada in 1966 .

question:
Relationship: 'head', Argument/Subject 1: 'red', Argument/Subject 2: 'slut'
answer:
Red Headed Slut Ingredient .