该句式中的“名2的名3”是一个谓词隐含结构，名1和名2是表示绝对义的机构名、刊物名、作品名或人名等的专有名词；
"N_2 de N_3" is a verb covered structure, N_1 and N_2 are proper nouns which have absolute meaning such as the institute, publication, works, person's name and so on;
另一方面，重写阶段可能会通过传递引入隐含谓词。
On the other hand, the rewrite phase might introduce implied predicates through transitivity.
这些限制由必需的谓词所引入，并隐含了特定数据源的昵称之间的关系。
These restrictions are introduced by the required predicates and implicit relationships between nicknames of specific data sources.
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