Index A AAA slogan, 6­7, 8, 11, 18, 22, 29, 49, 133, 312, 313, 317, 318­319 in FOAF, 196, 197, 201 objectification errors and, 320 in OWL, 225, 252 Agents, in FOAF, 197 AGROVOC, 207, 208f, 209, 210­211, 212, 213, 218, 219 All star players example, see Baseball example Alternative descriptions, of restrictions, 246­248 Americans with Disabilities Act of 1990 (ADA90), 243 Annotation, OWL, 305 Application architecture, 51 for database application, 56, 57f for RDF application, 57f Application interface, 52, 60 Asserted triples, 118, 123 in catalogue model, 119f, 120f see also Triples and individuals, relating, 245 managing identifiers for, 359 in object-oriented programming, 19, 114, 115 reasoning with, 276 relationships, inferring, 273 tracking, 311 unsatisfiable, 271, 272f, 278 propagation of, 272 variation in, 18 see also Subclasses Class-Individual Mirror pattern, 243, 311, 329 Closed world, 11, 252 Commonality, in modeling, 18­19, 25 Community tagging, 15, 16 infrastructure of, 15­16 Competency questions, 308, 324 Complement set, 262, 264f Concept scheme, 214 managing, 215 Connected data, 3 Contradiction, in OWL, 270, 271f, 278 Controlled Vocabulary, 213, 219 see also Vocabulary B Baseball example