Local （自分で定義したConcept） と Parent （システムで定義されているもの） の使いわけを指定できる。
<settings>
...
<setting name="USE_CONCEPTS">3</setting>
...
</settings>
USE_CONCEPTS
Determines how the concepts work. The following values are valid:
0
Concepts are not used.
1
Only local concepts are used. Local concepts are concepts that are defined in the current dialog account.
2
Only concepts from the parent account are used.
3
The concepts from both the current account and the parent account are used. It is the default value.