@article{okgooglewhatisyourontologyorexploring,
  title = {OK Google, What Is Your Ontology? Or: Exploring Freebase Classification to Understand Google's Knowledge Graph},
  author = {Niel Chah},
  year = {2018},
  eprint = {1805.03885},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1805.03885v2},
}