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: 'November 25 - President Bush signs the Homeland Security Act of 2002 , establishing the Department of Homeland Security .', Argument/Subject 1: 'act', Argument/Subject 2: 'homeland security'
establish department of

Sentence: 'In 1973 , Ireland joined the European Economic Community which later became the European Union .', Argument/Subject 1: 'european economic community', Argument/Subject 2: 'european union'
become

Sentence: 'The New Hampshire Attorney General is the head of the New Hampshire Department of Justice .', Argument/Subject 1: 'attorney general', Argument/Subject 2: 'department of justice'

be head of