We can identify three main cases for which the model produces an error:

the correct class can be directly inferred from the text content easily, even without background knowledge

the correct class can be inferred from the text content, given that event-specific knowledge is provided

the correct class can be inferred from the text content if the text is interpreted correctly 
 Question: What type of errors do the classifiers use?
correct class can be directly inferred from the text content easily, even without background knowledge correct class can be inferred from the text content, given that event-specific knowledge is provided orrect class can be inferred from the text content if the text is interpreted correctly