Top level classes for some of the major Open Biomedical Ontologies (OBO). Allows easy and succinct specification for OBO data types for SSWAP (http://sswap.info) RDGs (Resource Description Graphs). For example, to specify that a SSWAP semantic web service accepts Gene Ontology (GO) terms as input, the sswap:Subject node simply asserts that it is of rdf:type obo:GO. Use is analogous for specifying return data types with sswap:Object. See http://sswap.info for more information on SSWAP semantic web services. Food 'Term' is a class that serves as the superclass of all OBO style classes, including classes defined in concrete ontologies such as GO, PO, SO, TO, etc.. Each such class corresponds to the contents of a [Term] stanza in an OBO file, as described in the format guide http://www.geneontology.org/GO.format.obo-1_0.shtml. Note that the SSWAP-compliant OBO ontology (of which this class is a part) defines an AnnotationProperty corresponding to the major required and optional tags that can be contained within the [Term] stanza of the associated class. Sequence operation Plant Ontology Microarray and Gene Expression Data (MGED) Ontology Cellular component Plant structure Sequence variant Sequence attribute Chromosome variation Molecular function Genome Sequence collection Trait Ontology Sequence replication mode Sequence feature Environmental matter MGED Ontology MGED Extended Ontology Biological process Environmental Ontology Trait Ontology Environmental feature Plant growth and development stages Biome Gene Ontology Mutation Sequence Ontology Open Biomedical Ontologies MGED Core Ontology Standardized predicate for any "thing" to assert a relationship to something of type obo:MO. Standardized predicate for any "thing" to assert a relationship to something of type obo:GO. Standardized predicate for any "thing" to assert a relationship to something of type obo:SO. Standardized predicate for any "thing" to assert a relationship to something of type obo:ENVO. Standardized predicate for any "thing" to assert a relationship to something of type obo:PO. Standardized predicate for any "thing" to assert a relationship to something of type obo:OBO. Standardized predicate for any "thing" to assert a relationship to something of type obo:TO. A property of obo:Term and its subclasses that corresponds to the optional 'def' (definition) tag within the [Term] stanza within an OBO format file. A property of obo:Term and its subclasses that corresponds to the required 'id' tag within the [Term] stanza within an OBO format file. A property of obo:Term and its subclasses that corresponds to the required 'name' tag within the [Term] stanza within an OBO format file. A property of obo:Term and its subclasses that corresponds to the optional 'comment' tag within the [Term] stanza within an OBO format file. A property of obo:Term and its subclasses that corresponds to the optional 'is_obsolete' tag within the [Term] stanza within an OBO format file.