def select_context(
        cls, app: Optional[LLMRails] = None
    ) -> serial_utils.Lens:
        """
        Get the path to the context in the query output.
        """
        return select_schema.Select.RecordCalls.kb.search_relevant_chunks.rets[
            :
        ].body

        Get the path to the context in the query output.
        
src/apps/nemo/trulens/apps/nemo/tru_rails.py