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: 'Agence France-Presse reports that the executive director of UNICEF , Carol Bellamy , has expressed her concern about the impact that the flight of people from Kandahar can have on children .', Argument/Subject 1: 'carol bellamy', Argument/Subject 2: 'unicef'

Ex Output:
be director of

Ex Input:
Sentence: 'Greensboro is served by the Piedmont Triad International Airport .', Argument/Subject 1: 'greensboro', Argument/Subject 2: 'piedmont triad international airport'

Ex Output:
be serve by

Ex Input:
Sentence: 'As little Mary and Joseph and the shepherds and the wise people and animals streamed up the aisle , I didn know whether to look into the eyes of the children or our older members .', Argument/Subject 1: 'little', Argument/Subject 2: 'mary'

Ex Output:
be know of