querying AWS neptune_db using germlin

[recovere-hima]

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Example Code

from langchain_openai import ChatOpenAI
from langchain_experimental.graph_transformers import LLMGraphTransformer
from langchain_core.documents import Document

llm=ChatOpenAI(temperature=0)
    transformer = LLMGraphTransformer(
                llm=llm,
                allowed_nodes=["", ""])

    doc = Document(page_content="Is the lanchain supports llm")
    graph_documents = transformer.process_response([doc])
    print(graph_documents,"graph_documents")
    response = db(graph_documents)

Description

I am trying to fetch the data from the neptune database using germlin. How can i fetch the data.
If i convert the text to germlin query we can fetch data.
But how can i do that in langchain.
I can't able to see any documentation for that.

System Info

pip install langchain boto3 gremlinpython