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 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 .'

Output: service


Input: Consider Input: Given Relationship: 'win', Sentence: 'The only part about football youll hear is that Michael Irvin was wide receiver and the vocal leader for a Cowboys team that won three Super Bowls in four years during the 1990s , a time when I lived but a short drive away from Texas Stadium .'

Output: in


Input: Consider Input: Given Relationship: 'be trademark of', Sentence: 'Ubuntu are registered trademarks of Canonical Ltd.'


Output: trademarks