错误的 理想的 结果 Search semantic 结果 Researcher Research Projects Gender Institute Institute Projects Name Topic Researche Researcher Researcher Project Project Female Linda Researcher XML” Gender ProjRef Gender ojRe Name NameName Gender Name Gender ..Topic , Topic Female Alice Jde""Linda" Female "John"Male "XML""RDE Q: Female. XML Tree Graph(IDRef)9 Search Semantic Q: Female, XML Research Institute Institute Projects Researcher Researcher Researcher Researcher Project Project Name Name Topic Topic ”Alice” ”Joe” Name ProjRef Name ProjRef ”Linda” ”John” ”XML” ”RDF” Gender Female Gender Male Gender Female Gender Male Project Topic ”XML” Researcher Name ”Linda” Gender Female Projects Topic ”XML” 理想的 结果 错误的 结果 Researcher Name ProjRef ”Linda” Gender Female Tree & Graph (IDRef)