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.

[Q]: Sentence: 'Bill served his country in the U.S. Navy for three years before marrying in 1961 .', Argument/Subject 1: 'bill', Argument/Subject 2: 'us navy'
[A]: serve in


[Q]: Sentence: 'Quickly batch converts audio files between audio formats like MP3 , WAV , WMA , OGG.', Argument/Subject 1: 'audio', Argument/Subject 2: 'mp3'
[A]: file to


[Q]: Sentence: 'Decades of increasing tensions between the United States and Japan erupted in the attack on the United States Pacific Fleet at Pearl Harbor .', Argument/Subject 1: 'japan', Argument/Subject 2: 'unite state'
[A]:
attack