We represent aspects into three types: frequent explicit aspects, infrequent explicit aspects, and implicit aspects shown in 2 to 4 columns of this table. Coreferential and irrelevant aspects handing shown in column 5 and column 6, respectively. We labeled these columns by null, low, medium, high, handled, and not handled. “Null” = not extracting those types of aspects. “Low” = extracting 10 to 40% of those types of aspects. “Medium” = extracting 40 to 70% of those types of aspects. “High” = extracting 70 to 100% of those types of aspects. “Handled” = handling those types of aspects. “Not handled” = not handling those types of aspects.