SemanticFunction.cs

public async Task<Riddle> GetRiddle()
{


    try
    {
        string skPrompt = @"Ask an interesting new riddle with its answer in a below json format. It should only contain a JSON message and nothing else. It should not have anything racist, unethical or targeted to certain group of people.

                        {
                          ""Question"": """",
                          ""Answer"": """"
                        }

                        Some historic riddles: 
                        {{$history}}
                        ";

        var aiRequestSettings = new OpenAIRequestSettings()
        {
            MaxTokens = 200,
            Temperature = 0.7,
        };

        // Set-up the prompt configuration and adding the AI Request Settings
        var promptConfig = new PromptTemplateConfig();
        promptConfig.ModelSettings.Add(aiRequestSettings);


        var promptTemplate = new PromptTemplate(
            skPrompt,
            promptConfig,
            kernel
        );

        var functionConfig = new SemanticFunctionConfig(promptConfig, promptTemplate);
        var guessPlugin = kernel.RegisterSemanticFunction("GuessPlugin", "GetRiddle", functionConfig);

        // Set-up the context (SKContext)
        var context = kernel.CreateNewContext();
        context.Variables.Add("history", riddleHistory);
        var result = await guessPlugin.InvokeAsync(context);

        var riddleObject = JsonSerializer.Deserialize<Riddle>(result.GetValue<string>().Trim());
        riddleHistory = $"{riddleHistory}, {result.GetValue<string>().Trim()}";
        return riddleObject;
    }
    catch (Exception ex)
    {
        throw new Exception(ex.Message);
    }
}