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.

Example Input: Sentence: 'Arabic is the official or co-official language of Algeria , Bahrain , Chad , Djibouti , Egypt , Iraq , Jordan , Kuwait , Lebanon , Libya , Morocco , Oman , Palestinian West Bank and Gaza , Qatar , Somalia , Sudan , Syria , Tunisia , Mauritania , United Arab Emirates , and Yemen .', Argument/Subject 1: 'arabic', Argument/Subject 2: 'unite arab emirate'
Example Output: be language of

Example Input: Sentence: 'Chittagong is the second-largest city in Bangladesh and is a major port .', Argument/Subject 1: 'chittagong', Argument/Subject 2: 'bangladesh'
Example Output: be city in

Example Input: Sentence: 'Iran , Saudi Arabia , Algeria , Indonesia , Iraq , Kuwait , Libya , Angola , Nigeria , Qatar , Venezuela and the United Arab Emirates are 12 members of OPEC .', Argument/Subject 1: 'venezuelum', Argument/Subject 2: 'opec'
Example Output:
be member of