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

Relationship: 'be president of', Argument/Subject 1: 'wolfensohn', Argument/Subject 2: 'world bank group'
J. D. Wolfensohn is president of the World Bank Group , Washington , DC , USA .

Relationship: 'be player in', Argument/Subject 1: 'kobe', Argument/Subject 2: 'nba'
Kobe has always been known as the best clutch player in the NBA since Michael Jordan .

Relationship: 'be head of', Argument/Subject 1: 'chalabus', Argument/Subject 2: 'iraqus national congress'
Other protesters denounced Ahmed Chalabi , head of the Iraqi National Congress and another key player in efforts to form an interim authority .