@article{JMLR:v20:17-734,
  author  = {Hubie Chen and Matthew Valeriote},
  title   = {Learnability of Solutions to Conjunctive Queries},
  journal = {Journal of Machine Learning Research},
  year    = {2019},
  volume  = {20},
  number  = {67},
  pages   = {1--28},
  url     = {http://jmlr.org/papers/v20/17-734.html}
}