臧良俊, 曹聪, 曹亚男, 吴昱明, 曹存根 - 计算机科学技术学报, 2013 - jcst.ict.ac.cn
… subclasses, including entity, event, attribute, and attribute-value; they are also organized …
: “A bicycle is similar to a car” and “I have been told that a car would be found on the street”. …