text: return {            "rougeLsum_score": results["rougeLsum"].fmeasure,            "reference": self.reference,        }reference = """The tower is 324 metres (1,063 ft) tall, about the same height as an 81-storey building.It was the first structure to reach a height of 300 metres.It is now taller than the Chrysler Building in New York City by 5.2 metres (17 ft)Excluding transmitters, the Eiffel Tower is the second tallest free-standing structure in France ."""rouge_score = Rouge(reference=reference)template = """Given the following article, it is your job to write a summary.Article:{article}Summary: This is the summary for the above article:"""prompt_template = PromptTemplate(input_variables=["article"], template=template)comet_callback = CometCallbackHandler(    project_name="comet-example-langchain",    complexity_metrics=False,    stream_logs=True,    tags=["custom_metrics"],    custom_metrics=rouge_score.compute_metric,)callbacks = [StdOutCallbackHandler(), comet_callback]llm = OpenAI(temperature=0.9)synopsis_chain = LLMChain(llm=llm, prompt=prompt_template)test_prompts = [    {        "article": """                 The tower is 324 metres (1,063 ft) tall, about the same height as                 an 81-storey building, and the tallest structure in Paris. Its base is square,                 measuring 125 metres (410