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.

Q: Given Relationship: 'be cause of', Sentence: 'The founder of Alive and Well Los Angeles has been on many TV shows promoting the fact that HIV is not the cause of AIDS .'

A: cause
****
Q: Given Relationship: 'be service of', Sentence: 'See a list of publications by Mayo Clinic authors on mitral valve disease on PubMed , a service of the National Library of Medicine .'

A: service
****
Q: Given Relationship: 'speak', Sentence: 'In big cities such as Beijing and Shanghai there are hospitals where English is spoken , but in smaller cities medical staff may not speak English so well .'

A:
speak
****