Task: Question Answering
Input (English): Specifically, we firstly extract multiple relations with an off-the-shelf Open Information Extraction (OpenIE) toolbox BIBREF7, then we select the relation that is most relevant to the answer with carefully designed heuristic rules. 
 Question: How they extract "structured answer-relevant relation"?
Output (English): Using the OpenIE toolbox and applying heuristic rules to select the most relevant relation.