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: 'open in', Sentence: 'Following a private dedication on June 2 , the Shinnecock Cultural Center and Museum opened to the public on June 16 2001 .'
opened

Given Relationship: 'be city in', Sentence: 'Milan hotels -Milan is either Italy 's second or first city , depending on who you ask .'
city

Given Relationship: 'be celebrate in', Sentence: '7 January 2009 Happy Christmas to all my Serbian Orthodox Christian friends who celebrate Christmas according to the Julian calendar .'
celebrate