text: import Marqofrom langchain.document_loaders import TextLoaderfrom langchain.document_loaders import TextLoaderloader = TextLoader("../../../state_of_the_union.txt")documents = loader.load()text_splitter = CharacterTextSplitter(chunk_size=1000, chunk_overlap=0)docs = text_splitter.split_documents(documents)import marqo# initialize marqomarqo_url = "http://localhost:8882"  # if using marqo cloud replace with your endpoint (console.marqo.ai)marqo_api_key = ""  # if using marqo cloud replace with your api key (console.marqo.ai)client = marqo.Client(url=marqo_url, api_key=marqo_api_key)index_name = "langchain-demo"docsearch = Marqo.from_documents(docs, index_name=index_name)query = "What did the president say about Ketanji Brown Jackson"result_docs = docsearch.similarity_search(query)    Index langchain-demo exists.print(result_docs[0].page_content)    Tonight. I call on the Senate to: Pass the Freedom to Vote Act. Pass the John Lewis Voting Rights Act. And while youâ€™re at it, pass the Disclose Act so Americans can know who is funding our elections.         Tonight, Iâ€™d like to honor someone who has dedicated his life to serve this country: Justice Stephen Breyerâ€”an Army veteran, Constitutional scholar, and retiring Justice of the United States Supreme Court. Justice Breyer, thank you for your service.         One of the most serious constitutional responsibilities a President has is nominating someone to serve on the United States Supreme Court.         And I did that 4 days ago, when I nominated Circuit Court of Appeals Judge Ketanji Brown Jackson. One