<human>:  In the novel, ‘1984’ by George Orwell, how many times does the word ‘Big Brother’ appear in the novel?
<bot>: Big Brother is mentioned in the novel a total of 4 times. In the first chapter, Winston Smith is shown a newspaper article about the creation of the “Big Brother” project. In the second chapter, Winston Smith is told that Big Brother is watching him, and in the third chapter, Winston Smith is told that Big Brother is watching him, and in the fourth chapter, Winston Smith is told that Big Brother is watching him.