A language model is being trained to perform a classification task to determine if two sentences are logically connected. Which of the following inputs would serve as the most effective negative example for this training process?

Constructing a Negative Training Example

For a task where a model learns to predict if one sentence logically follows another, a negative training example is formatted as [CLS] Sentence A . [SEP] Sentence B . [SEP]. In this format, the [SEP] token's specific function is to explicitly label the sentence pair as unrelated.