Made the relation between datasources and version clearer.
Made the relation between datasources and version clearer.



Former-commit-id: e68e4ad99ee25bf15662750809eb916243c25e0f
julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine