Overall, the reviewers have mixed opinions about this work. Although everyone agreed that this is an application paper, the reviewers felt that there are a series of issues that still need to be addressed. Specifically, in a camera-ready the authors are kindly asked to include "Circle Loss, Cross-Batch Memory, Adversarial Loss, and Cross-lingual Language Model" (as promised in the author feedback) to alleviate some of the reviewer concerns. Nevertheless, this paper addresses a problem in an interesting and important application domain and as such exploring how known neural architectures used in other domains can be adapted and used will be useful for the community, hence I believe this paper should be accepted.