(1) Step1: the two ontology to be merged in shown in
Figure 1 and Figure 2, in which Figure 1 shows 5 concepts:
animal, people, man, woman, cat and 5 attributes: name, age,
color, male and female; and Figure 2 shows 3 concepts:
person, boy, girl and 4 attributes: age, name, young_woman
and virile.