lib/chains/query_chain.ex

defmodule QueryChain do
  @moduledoc """
  Use this when you want to ask a question using natural-language text, with no side-effects.
  QueryChain is a wrapper around a Chain that requires 'input_text' in its
  input_variables.  Once you define that chain, you can 'ask' the QueryChain to run the chain and return the
  formatted output.
  """
end