Reactome HSA v71 pathways and hierarchy

Originally from: https://reactome.org/download-data
Version 71: https://reactome.org/about/news/145-version-71-releases

What was done here:
Top pathways found in https://reactome.org/PathwayBrowser/ were manually added as children to the parent R-HSA-0000000 in the file "NewestReactomeNodeRelations.txt". These top pathway descriptions were also added to the file "Top_Human_REACTOME_Nodes_ManualCuration.txt"

The rest of the pathway parent child relationships were taken from:
https://reactome.org/download/current/ReactomePathwaysRelation.txt
but only the R-HSA pathways were used and added to the file "NewestReactomeNodeRelations.txt"

The pathway definitions are the ones found in
"Ensembl2Reactome_All_Levels_v71.txt"