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: 'Engineers continued to review photographs of the affected area to determine whether it could pose a problem when Atlantis returns to Earth .', Argument/Subject 1: 'atlanti', Argument/Subject 2: 'earth'
[EX A]: return to

[EX Q]: Sentence: 'Estes Park is an hour and a half from Denver International Airport , and an hour from Fort Collins , home of Colorado State University .', Argument/Subject 1: 'fort collin', Argument/Subject 2: 'colorado state university'
[EX A]: be home of

[EX Q]: Sentence: 'On 10 September 1939 Canada declared war on Germany .', Argument/Subject 1: 'canada', Argument/Subject 2: 'germany'
[EX A]:
declare war with