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

Relationship: 'start at', Argument/Subject 1: 'party', Argument/Subject 2: '9pm'
Party starts at 9pm with intro class in Salsa !

Relationship: 'sign with', Argument/Subject 1: 'mark teixeira', Argument/Subject 2: 'new york yankee'
Mark Teixeira just signed an 8 year deal with the New York Yankees according to the Associated Press .

Relationship: 'flow through', Argument/Subject 1: 'river thame', Argument/Subject 2: 'london'

The Wandle flows through south London , meeting the River Thames at the heart of Europe 's largest city .