@inproceedings{gappingconstructionsinuniversal,
  title = {Gapping Constructions in Universal Dependencies v2},
  author = {Sebastian Schuster and Matthew Lamm and Christopher D. Manning},
  year = {2017},
  booktitle = {WS 2017 5},
  url = {https://aclanthology.org/W17-0416},
}