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 Input:
Sentence: 'Jesus was the son of God , Mary a virgin , they believe .', Argument/Subject 1: 'jesus', Argument/Subject 2: 'god'

Ex Output:
be son of


Ex Input:
Sentence: 'Liberia primary language is English , which is taught in the school system .', Argument/Subject 1: 'english', Argument/Subject 2: 'liberium'

Ex Output:
be language of


Ex Input:
Sentence: 'CIRED Romanian Committee is headed by the Central Bureau consisted of President , Vice - President , General Secretary and the Chairmen of the Study Committees .', Argument/Subject 1: 'president', Argument/Subject 2: 'committee'

Ex Output:

be chairman of