Apache Stanbol has dependencies to third party libraries that are not available via the Maven central repository, yet. Therefore, you have to install them manually into your local Maven repository.
Third party dependencies which are not available via Maven central:
This project can be used to generate a -deps package that contains the listed dependencies including scripts to install them in a local Maven repository.
The dependencies will be downloaded automatically from their project websites and re-packaged into an Apache Stanbol -deps package.
To generate the -deps package use
$ mvn package
You will find the -deps package as ZIP and TAR.GZ in the target folder.