An engineer is creating a prompt that includes several examples of a math word problem followed by a step-by-step solution. The goal is for the model to learn this reasoning pattern. However, the model's final answers are often buried within its explanatory text, making them hard to extract automatically. The engineer modifies each example by placing the token #### immediately before the final numerical answer. Why is this modification an effective strategy?

Improving Prompt Structure with a Formatting Token

Improving Automated Answer Extraction

The primary purpose of using a special formatting token, such as ####, to demarcate the final answer in a few-shot prompt is to enhance the language model's internal step-by-step reasoning capabilities.