Architectures -- SomeWhere in the Semantic Web -- A Framework for Aligning Ontologies -- A Revised Architecture for Semantic Web Reasoning -- Semantic Web Architecture: Stack or Two Towers? -- Languages -- Ten Theses on Logic Languages for the Semantic Web -- Semantic and Computational Advantages of the Safe Integration of Ontologies and Rules -- Logical Reconstruction of RDF and Ontology Languages -- Marriages of Convenience: Triples and Graphs, RDF and XML in Web Querying -- Descriptive Typing Rules for Xcerpt -- A General Language for Evolution and Reactivity in the Semantic Web -- Reasoning -- Use Cases for Reasoning with Metadata or What Have Web Services to Do with Integrity Constraints? -- Principles of Inductive Reasoning on the Semantic Web: A Framework for Learning in -Log -- Computational Treatment of Temporal Notions: The CTTN–System -- A Geospatial World Model for the Semantic Web -- Generating Contexts for Expression Data Using Pathway Queries.