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.

Input: Consider Input: Sentence: 'Bill served his country in the U.S. Navy for three years before marrying in 1961 .', Argument/Subject 1: 'bill', Argument/Subject 2: 'us navy'

Output: serve in

Input: Consider Input: Sentence: 'In just the last 2 days the Israelis have killed 29 Palestinians , and most of them are innocent civilians including children .', Argument/Subject 1: 'israeli', Argument/Subject 2: 'palestinian'

Output: be kill by

Input: Consider Input: Sentence: 'WPA stands for Wi-fi Protected Access .', Argument/Subject 1: 'wpa', Argument/Subject 2: 'wi-fi protect access'
Output: stand for