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: 'Nintendo , Game Boy and Official Seals are trademarks of Nintendo of America Inc. * Page 1 ADVISORY READ BEFORE USING YOUR GAME BOY SYSTEM A very small portion of the population may experience epileptic seizures when viewing certain kinds of flashing lights or patterns that are commonly present in our daily environment .'
trademarks