Infrrd.ai at SemEval-2022 Task 11: A system for named entity recognition using data augmentation, transformer-based sequence labeling model, and EnsembleCRF. - Jianglong He; Akshay Uppal; Mamatha N; Shiv Vignesh; Deepak Kumar; Aditya Kumar Sarda (SemEval@NAACL, 2022)