Ontology alignment with schema.org

[lifan0127]

I appreciate all your efforts in curating scientific knowledge as open linked data! With the latest release, schema.org was adopted by SciGraph:

The SN SciGraph model follows the Schema.org specifications.

Meanwhile the sgo ontology is still referenced in the data. However it is not available for download.

The latest version I found in this repository is from 2017:
https://github.com/springernature/scigraph/blob/master/2017Q4/models/ontologies/core/springernature-scigraph-ontologies.cc-by.2017-11-07.ttl

Where can I find the latest sgo ontology? Thanks!