Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Given Relationship: 'know about', Sentence: 'Americans know about China 's spread of nuclear weapons technology to Pakistan and North Korea , its threats against democratic Japan , and Taiwan and its destabilizing territorial claims against fellow democracies such as India and the Philippines .'
Student:
about