Constraining LLM Predictions to a Predefined Label Set

A developer needs to use a text-generation model to classify customer reviews as 'Positive', 'Negative', or 'Neutral'. The developer decides to reframe this task as a 'fill-in-the-blank' problem, creating a prompt where the model's most probable completion is one of the target labels. Given the customer review, 'The battery life on this phone is surprisingly short.', which of the following prompts is the best application of this reframing technique?

Analyzing Unexpected Model Behavior in Cloze Task Classification

Limitation of Cloze Task Reframing