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.

Given Relationship: 'be establish in', Sentence: 'The Littleton Fire Fighters Foundation was established in January 2000 .'
established

Given Relationship: 'arrive in', Sentence: 'Gauguin arrived in Arles by train early on 23 October .'
arrived

Given Relationship: 'be mayor of', Sentence: 'Oakland mayor Ron Dellums has proposed not asking for criminal records in city job applications since ex-felons often have no choice but drug dealing and the resultant violence when released from prison .'
mayor