Biomedical question answering 1 Character recognition 1 Computational linguistics 1 External features 1 Feature fusion 1 Humans 1 Language 1 NAtural language processing 1 NER 1 Named entity recognition 1 Natural Language Processing 1 Natural language processing systems 1 Neural Networks, Computer 1 POS 1 Pre-trained language model 1 Question Answering 1 Question Answering Task 1 Speech recognition 1 Syntactic features 1 Syntactics 1 Text representation 1 article human 1 human experiment 1 language 1 natural language processing 1 speech 1