“…Extracting requirements from online news documents, which are not related to software, is a challenge. Most studies extract requirements from software documents (such as software requirements specification [25], project description [26], or interview transcripts [27]) or documents directly related to the software (e.g., user reviews [28], Twitter [15], or online discussion [18]). In the extraction process of documents related to software, researchers usually used the method to get phrases using part-of-speech (POS) tagging or n-gram and then select phrases based on the level of importance [22], [29].…”