<start_of_text>Build Haystack extractive qa system using TableReader, tfidf retriever and open search document store<response>{"version": "1.6.0", "components": [{"name": "open_search_document_store", "type": "OpenSearchDocumentStore", "params": {"username": "admin", "port": 0, "content_field": "content", "embedding_field": "embedding", "embedding_dim": 768, "verify_certs": false, "create_index": true, "similarity": "dot_product", "timeout": 30, "return_embedding": false, "duplicate_documents": "overwrite", "index_type": "flat", "scroll": "1d", "skip_missing_embeddings": true}}, {"name": "tfidf_retriever", "type": "TfidfRetriever", "params": {}}, {"name": "table_reader", "type": "TableReader", "params": {}}], "pipelines": [{"name": "my_query_pipeline", "nodes": [{"inputs": ["Query"], "name": "tfidf_retriever"}, {"inputs": ["tfidf_retriever"], "name": "table_reader"}]}]}<end_of_text>