Detailed Instructions: 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: 'When America entered World War II , Hinman was trained as a Naval cryptanalyst and assigned to a code-breaking unit in Washington DC .', Argument/Subject 1: 'america', Argument/Subject 2: 'world war ius'
A:
enter