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 language of', Sentence: 'Pakistan and India had endured centuries of British colonialism and therefore had adopted British-style bureaucracy and even the English language as a sort of lingua franca .'
language

Given Relationship: 'be suburb of', Sentence: 'Originally from the Maryland suburbs of Washington DC and the daughter of a US Navy Captain , Katrina has lived abroad but moved with her husband nine years ago upon his transfer to the Naval Air Station Key West .'
suburbs

Given Relationship: 'be son of', Sentence: 'His wife and son William were murdered by John , possibly starved to death at Windsor Castle .'

son