Advice for a prompt in Gemini

I'm trying to write a prompt for Gemini that asks him(?) to give a grade to articles in an unspecified scientific debate. It asks him to grade articles from -100 to 100, where -100 is extremely pro whatever the discussion centers around, and +100 is the extremely anti stance. The grade should reflect solely the stance, the oratory. The quality of research and/or consensus on the topic should not influence it in the slightest. Here is what I've used:

"I'm trying to build a metric that symbolizes the oratory and stance of academic articles. You should ignore any words or information about retractions. If there is the word retracted in the article, ignore it. Also, ignore political implications, quality of research, expert consensus, public opinion etc. I'm solely looking for how strong they position themselves, their perceived certainty in the text.

 

They are taking a side in a dispute. And I want you to separate them in three major categories: pro, neutral, and against. In the end, I want you to give them a score based on how strong their position is from -100 to 100.

-100 means extremely for (pro) whatever they defend. This means the article does not only suggests more studies or anything. It just judges its position as clear cut and the discussion as pretty much over. You can completely ignore how good or bad their methodology is, how good or bad their data treatment is. I'm focusing on oratory; in other words, how strong they position their final suggestions (are they reluctant, do they think the case is done, do they present their stance as clear and unapologetic). A -70 are in favor, but suggests that the case is not over.

 

+100 means completely against whatever the other side is defending. They strongly believe and argue against it and think the case is set and done. A +70 means they are against but suggest that there are still some details that should be iron out by more studies/articles.

 

Of course, anything in zero or close to zero is neutral.

 

Once again, ignore any words or information about retractions. If there is the word retracted in the article, ignore it. Also, ignore political implications, quality of research, expert consensus, public opinion etc. I'm solely looking for how strong they position themselves, their perceived certainty in the text. I'm solely looking for how strong they position themselves, their perceived certainty in the text."

I'm completely new to prompt engineering. Is there any way to improve my prompt? Any advice or fix will be greatly appreciated!!