Given the task definition and input, reply with output. 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 trademark of', Sentence: 'PlayStation , PLAYSTATION , PS3 and PSP are registered trademarks of Sony Computer Entertainment Inc. UMD is a trademark of Sony Computer Entertainment Inc. Memory Stick Duo , Memory Stick PRO Duo , ATRAC3 and ATRAC3plus are trademarks of Sony Corporation .Windows Media is either a registered trademark or a trademark of Microsoft Corporation in the United States and/or other countries .'

trademark