This issue was noted by @cmungall. My guess is that it's due to the fact that the property assertion generator requests both object property assertions and data property assertions, and whelk will throw an UnsupportedOperationException for data property assertions. This will probably require a change in whelk, but I just wanted to note it here.
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4