Definition: 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: Sentence: '1 In the third year of Cyrus king of the Persians , a word was revealed to Daniel surnamed Baltassar , and a true word , and great strength : and he understood the word : for there is need of understanding in a vision . 2 In those days I Daniel mourned the days of three weeks .', Argument/Subject 1: 'cyrus', Argument/Subject 2: 'persian'
Output:
be king of