Can we "weight" inputs to GPT?

So here is my situation. Suppose I have 5 news articles = [A1, …, A5] about a topic and I want to summarize these articles, but I want to give more weight to some articles and not others. Suppose the weight vector is [0.3, 0.2, 0.2, 0.2, 0.1].

How can I have GPT do this in a prompt?