Support for RDF* in n10s 4.1.*

According to the release notes for n10s, the latest version (i.e. v4.1.*) supports the import / export of RDF* data. However, I am encountering issues when trying to load data. For instance, I am trying to load the following RDF* triple:

<< <> ex:worksFor <>. >> pcicore:coversPeriod <> .

Can you clarify the limitations (if any) for importing RDF* data through the n10s plugin?