You will be given a definition of a task first, then some input of the task.
In this task, you are given a paper review. Based on the review, your job is to identify language and generate "en" if the review is in English or generate "es" if the review is in Spanish. Note that URLs in the text have been replaced with [Link].

This paper provides a number of performance enhancements inspired by domain knowledge. Taken together, these produce a compelling system that has shown itself to be the best-in-class as per the related competition.  Experts agree that the authors do a good job at justifying the majority of the design decisions.    pros:  - insights into the SOTA Doom player    cons:  - lack of pure technical novelty: the various elements have existed previously    This paper comes down to a matter of taste in terms of appreciation of SOTA systems or technical novelty.  With the code being released, I believe that this work will have impact as a benchmark, and as a guidebook  as to how features can be combined for SOTA performance on FPS-style scenarios.
Output:
en