1. A computer implemented method comprising: receiving, by a transformation engine, a machine readable input data set corresponding to a Resource Description Framework (RDF) graph which is arranged as a hierarchy nodes having a plurality of ordered levels, with the order of the levels of the plurality of levels running from a root node level to a lowest node level; traversing, using a transformation engine, the nodes of the RDF graph, starting at the root node and proceeding through the other nodes in a depth first order, so that at each node of the RDF graph, a transformation engine performs the following operations: selecting, using a package selectQuery, included in the transformation engine, a set of package(s) of the current node included in the current node being traversed, for each package of the set of package(s) of the current node, constructing, using a package constructor included in the transformation engine, a target for the package, for each package of the set of package(s) of the current node, selecting, using a class selectQuery included in the transformation engine, a set of class(es) of the current package of the current node, and for each class of each set of classes of each package of the set of package(s) of the current node, constructing, using a class constructor included in the transformation engine, a target for the class; and assembling, based upon content of the RDF graph, targets for the packages included in the RDF graph and targets for the classes included in the RDF graph, an alternative presentation for the content of the RDF graph, with the alternative presentation taking the form of a text based presentation.
1. A computer implemented method comprising: receiving, by a transformation engine, a machine readable input data set corresponding to a Resource Description Framework (RDF) graph which is arranged as a hierarchy nodes having a plurality of ordered levels, with the order of the levels of the plurality of levels running from a root node level to a lowest node level; traversing, using a transformation engine, the nodes of the RDF graph, starting at the root node and proceeding through the other nodes in a depth first order, so that at each node of the RDF graph, a transformation engine performs the following operations: selecting, using a package selectQuery, included in the transformation engine, a set of package(s) of the current node included in the current node being traversed, for each package of the set of package(s) of the current node, constructing, using a package constructor included in the transformation engine, a target for the package, for each package of the set of package(s) of the current node, selecting, using a class selectQuery included in the transformation engine, a set of class(es) of the current package of the current node, and for each class of each set of classes of each package of the set of package(s) of the current node, constructing, using a class constructor included in the transformation engine, a target for the class; and assembling, based upon content of the RDF graph, targets for the packages included in the RDF graph and targets for the classes included in the RDF graph, an alternative presentation for the content of the RDF graph, with the alternative presentation taking the form of a text based presentation. 2. The computer implemented method of claim 1 wherein: the package selectQuery is a SPARQL query; and the class selectQuery is a SPARQL query.