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: 'David Wood-Gush was born in South Africa and received a B.Sc. from the University of Witwatersrand , Johannesburg , and a Ph.D. from the University of Edinburgh .', Argument/Subject 1: 'david', Argument/Subject 2: 'south africa'
Example Output: be bear in

Example Input: Sentence: 'Interior Minister Nicolas Sarkozy , who visited a police command headquarters in southern Paris overnight , has said that the gangs responsible for the violence have become increasingly organised .', Argument/Subject 1: 'sarkozy', Argument/Subject 2: 'pari'
Example Output: say in

Example Input: Sentence: 'Between 1972-1980 he worked at the Sakhalin Complex Institute of the Far-Eastern Scientific Centre of the USSR Academy of Sciences , first as Head of Laboratory and then as Deputy Director of the Institute .', Argument/Subject 1: 'institute', Argument/Subject 2: 'director'
Example Output:
be head by