Calling attention to [this](https://github.com/MycroftAI/lingua-franca/blob/e6837eb2f8fabb72af3a8389c4a85cbcdae5e40b/lingua_franca/lang/parse_en.py#L298-301) TODO. I'm marking this as a bug because I think that's how users will perceive it, although one could argue that it's just unimplemented functionality.