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.

Example Input: Given Relationship: 'be professor of', Sentence: 'Your nerves learn to communicate more effectively with your muscle cells , allowing the muscle to recruit more cells during each contraction , says Mark A. W. Andrews , PhD , associate professor of physiology at Lake Erie College of Osteopathic Medicine in Erie , Pa .'
Example Output: professor

Example Input: Given Relationship: 'cross', Sentence: 'In the end , Carrier 's claim remains unchallenged : we have more evidence that Caesar crossed the Rubicon than we have that Jesus rose from the grave .'
Example Output: crossed

Example Input: Given Relationship: 'be use in', Sentence: 'NTSC-PAL Issues --------------- North America and Japan uses the NTSC television standard , and the rest of the world uses PAL .'
Example Output:
uses