The fourth part defines directed reactions and the starting and end point for each reaction; furthermore, details on the type of reaction were retrieved; even though metabolic reactions are mostly conversions, this type of information can be valuable to exclude transport reactions, or interesting when using the approach described in this paper to build a protein-protein or signaling network. The fifth part retrieves the identifiers for the source and target metabolite, which were unified to Wikidata first; after this unification, corresponding ChEBI and HMDB identifiers were also queried, if available in the RDF. The sixth and last part retrieves identifiers from the Rhea interaction database (if available in the pathway models), which could be used in the future to add stoichiometry information to the subnetworks or link to kinetic databases.