Instead, our task is to identify the central concept the question is testing (e.g., measuring speed), and to eliminate words that are part of an example or narrative (e.g., turtle, path) that are unlikely to contribute much utility (or, may introduce noise) to the QA process.
because at a high level focus words identify the information need of a question, which is what we aim to do as well, we continue to use the same terminology in this work.