Original sentence: Finally, with James' reluctant admittance of "I don't know", Matthews accused James of being a "blank slate" who didn't know anything about history, adding "if you don't know what appeasement is about, then don't talk about it
Edited sentence: "  Finally, with James' reluctant admittance of "I don't know", Matthews accused James of being a "blank slate" who didn't know anything about history, adding "if you don't know what appeasement is about, then don't talk about it.James responded by changing the subject and repeating generic responses such as "Neville Chamberlain was an appeaser, alright