Add PineconeVectorStore for better performance.

4.Evaluation - Generation - Optimization/main.py

@@ -8,6 +8,7 @@
 from llama_index.embeddings.openai import OpenAIEmbedding
 from llama_index.vector_stores.pinecone import PineconeVectorStore
 from llama_index.core.response_synthesizers import ResponseMode
+
 # from llama_index.postprocessor.cohere_rerank import CohereRerank
 from llama_index.core.indices.query.query_transform.base import (
     StepDecomposeQueryTransform,