include_run_info: bool = False,
    ) -> Dict[str, Any]:
        """Execute the chain.
        Args:
            inputs: Dictionary of inputs, or single input if chain expects
                only one param. Should contain all inputs specified in
                `Chain.input_keys` except for inputs that will be set by the chain's
                memory.
            return_only_outputs: Whether to return only outputs in the
                response. If True, only new keys generated by this chain will be
                returned. If False, both input keys and new keys generated by this
                chain will be returned. Defaults to False.
            callbacks: Callbacks to use for this chain run. These will be called in
                addition to callbacks passed to the chain during construction, but only
                these runtime callbacks will propagate to calls to other objects.
            tags: List of string tags to pass to all callbacks. These will be passed in
                addition to tags passed to the chain during construction, but only
                these runtime tags will propagate to calls to other objects.
            metadata: Optional metadata associated with the chain. Defaults to None
            include_run_info: Whether to include run info in the response. Defaults
                to False.
        Returns:
            A dict of named outputs. Should contain all outputs specified in
                `Chain.output_keys`.
        """
        inputs = self.prep_inputs(inputs)
        callback_manager = CallbackManager.configure(
            callbacks,
            self.callbacks,
            self.verbose,
            tags,
            self.tags,
            metadata,
            self.metadata,
        )
        new_arg_supported = inspect.signature(self._call).parameters.get("run_manager")
        run_manager = callback_manager.on_chain_start(
            dumpd(self),
            inputs,
            name=run_name,
        )
        try:
            outputs = (