{'faithfulness': nan, 'answer_relevancy': nan, 'context_relevancy': 0.7412, 'context_utilization': nan} , { "faithfulness": NaN, "answer_relevancy": NaN, "context_relevancy": 0.5342715544752126, "context_utilization": NaN }, { "faithfulness": NaN, "answer_relevancy": NaN, "context_relevancy": 0.523524948140371, "context_utilization": NaN }, { "faithfulness": NaN, "answer_relevancy": NaN, "context_relevancy": 0.6374515308316596, "context_utilization": NaN }