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 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 .'

Output: cause


Input: Consider Input: Given Relationship: 'attack', Sentence: 'If China would choose to ever attack Taiwan , with such a huge force , the U.S. would have great difficulty repelling such a large military that could quickly overrun the Island .'

Output: attack


Input: Consider Input: Given Relationship: 'walk to', Sentence: 'Honls Beach is a short 5 minute walk .'


Output: walk