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.

Sentence: 'ADinf32 Pro - Corporate license unlimited - NOW AVAILABLE WORLD WIDE - the celebrated antivirus and security tool used in Russia by Russian Central Bank and the Russian Ministry of Defense !', Argument/Subject 1: 'russian', Argument/Subject 2: 'russium'
be use in

Sentence: '" Cape Town has undoubtedly the safest central city in South Africa , " said Boraine .', Argument/Subject 1: 'cape town', Argument/Subject 2: 'south africa'
be city of

Sentence: 'Kosovo became a province of Serbia , with the Serbs and their feared police in charge .', Argument/Subject 1: 'kosovo', Argument/Subject 2: 'serbium'

be province in