From the given sentence, extract the phrase (often noun or verb) that carries the given relationship. The generated phrase should be present in the sentence.

Input: Consider Input: Given Relationship: 'be president of', Sentence: 'A month after writing this , he became President of the United States when Richard M. Nixon resigned .'

Output: President


Input: Consider Input: Given Relationship: 'be analyse use', Sentence: 'Data were analysed using SPSS 12.0.1 .'

Output: analysed


Input: Consider Input: Given Relationship: 'be teach in', Sentence: 'For example , prior to supervising doctoral students , INRIA researchers and engineers teach on various advanced courses , especially post-graduate courses , at French universities and engineering schools .'


Output: teach