“…Inducing more and higher-quality answers is essential to sustainable development of SQA websites. To facilitate sustainable development of SQA websites, numerous researchers have studied user motivation in knowledge contribution (Wasko & Faraj, 2000), factors attracting or motivating answerers (Jin et al, 2015), criteria measuring question success or failure (Shah et al, 2012), searchresult relevance judgment , search-result measurement (Zhang et al, 2019), answer quality (Zhao et al, 2019), website evaluation (Huang et al, 2006), and solutions to improve response rate (Liu & Jansen,2017;Oh, 2018;Elalfy et al, 2017;Ren et al, 2018;Sin et al, 2018;Wang, et al, 2018;Li et al, 2016). However, little is known about how the question itself affects the answer outcome on an SQA website.…”