sentence1: we describe the pmi-cool system , which we developed to participate in semeval-2016 task 3 , subtask a , which asks to rerank the answers in a question-answer thread , ordering them from good to bad .
sentence2: we have described our pmi-cool system for semeval-2016 , task 3 on community question answering , subtask a , which asks to rerank the comments from the thread for a given forum question from good to bad .