@article{aprobabilisticlogicprogrammingevent,
  title = {A Probabilistic Logic Programming Event Calculus},
  author = {Anastasios Skarlatidis and Alexander Artikis and Jason Filippou and Georgios Paliouras},
  year = {2012},
  eprint = {1204.1851},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1204.1851v2},
}