Teacher:Given a sentence and two mentions from the text (arguments), indicate a phrase (a verb or noun phrase) that describes the relationship between the provided arguments.
Teacher: Now, understand the problem? Solve this instance: Sentence: 'Roger Federer won his fifth straight US Open against Scotland 's Andy Murray , who slayed Roger 's dragon , Rafael Nadal , the day before .', Argument/Subject 1: 'federer', Argument/Subject 2: 'us open'
Student:
win