Run NAF to SEM on 4 example files

[MartineDeVos]

• Input is (four) final-NAF documents, i.e. already processed bij newsreaderdutch pipeline
• Set up knowledge store in docker
• Run single-document conversion on the four final-NAF documents

[piekvossen]

Run the script naf2sem-grasp.sh for each NAF file, which is what we use mostly. This creates a trig file for each NAF. Next follow the KnowledgeStore instructions how to load these trig files into the KS.