Type: Bachelor or Master thesis, also possible in combination with a project.
Background info: our question answering system Aqqu anwers questions formulated in natural language from a knowledge base. Currently, that knowledge base is Freebase, which is still the world's largest open source general-purpose knowledge base. Unfortunately, Freebase was discontinued in 2016.
Goal: make our question answering work on WikiData. WikiData is currently growing fast and will become the new Freebase. It's an exciting dataset.