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.

[EX Q]: Sentence: 'In addition to Japan 's three major cities of Tokyo , Osaka and Nagoya , 15 other regional cities are served by rail-based transit systems such as monorails , subways and AGTs .', Argument/Subject 1: 'osaka', Argument/Subject 2: 'japan'
[EX A]: be city in

[EX Q]: Sentence: 'Champagne refers to a Sparkling Wine from France 's Champagne region .', Argument/Subject 1: 'champagne', Argument/Subject 2: 'france'
[EX A]: be region of

[EX Q]: Sentence: 'The Gentile was allowed to convert to Judaism after going through the washing of baptism .', Argument/Subject 1: 'gentile', Argument/Subject 2: 'judaism'
[EX A]:
convert to