Which ones are correct among the following statements about the Semantic Web? （下面关于语义网的说法哪些是正确的？）
选项：

A:The foundation of the Semantic Web is the ontology (语义网的基石是本体). ;
B:The Semantic Web is a kind of data web (语义网是一种数据之网).;
C:The Semantic Web is a new form of Web content (语义网是Web内容的一种新的表达形式).;
D:The Semantic Web is very different from the knowledge graph (语义网与知识图谱是完全不同的事物).