Update to always use role user as role system is useless pos.

wt2_playground.py

@@ -24,22 +24,22 @@ def generate_summarizer(
         frequency_penalty=float(frequency_penalty),
         messages=[
             {
-                "role": "system",
+                "role": "user",
                 "content": "You are a IELTS examiner.",
             },
             {
-                "role": "system",
+                "role": "user",
                 "content": f"The question you have to grade is of type {question_type} and is the following: {question}",
             },
             {
-                "role": "system",
+                "role": "user",
                 "content": "Please provide a JSON object response with the overall grade and breakdown grades, "
                            "formatted as follows: {'overall': 7.0, 'task_response': {'Task Achievement': 8.0, "
                            "'Coherence and Cohesion': 6.5, 'Lexical Resource': 7.5, 'Grammatical Range and Accuracy': "
                            "6.0}}",
             },
             {
-                "role": "system",
+                "role": "user",
                 "content": "Don't give explanations for the grades, just provide the json with the grades.",
             },
             {