/* Multiple Chains */

import { PromptTemplate } from "langchain/prompts";
import { RunnableSequence } from "langchain/schema/runnable";
import { StringOutputParser } from "langchain/schema/output_parser";
import { ChatOpenAI } from "langchain/chat_models/openai";

const prompt1 = PromptTemplate.fromTemplate(
  `What is the city {person} is from? Only respond with the name of the city.`
);

const model = new ChatOpenAI({});

const chain = prompt1.pipe(model).pipe(new StringOutputParser());