anchor.diff:  2016arXiv160902759S,k2,astrophysics
   2016arXiv160902760S,k2,astrophysics
   2016arXiv160902864S,kepler,astrophysics
  +2016arXiv160902914C,k2,astrophysics
  +2016arXiv160903209B,k2,astrophysics
   2016arXiv160903210K,k2,astrophysics
   2016arXiv160903826V,k2,astrophysics
   2016arXiv160903905F,kepler,exoplanets
  
positive.code: 2016JCAP...08..061S,unrelated,
  2016JGRA..121.1273T,unrelated,
  2016JGRA..121.4103Z,unrelated,
  2016MNRAS.455..626M,kepler,exoplanets
  2016MNRAS.455..987C,kepler,astrophysics
  2016MNRAS.455.1171M,unrelated,
  
negative.code: 2016arXiv160600052R,k2,astrophysics
  2016arXiv160600055R,k2,astrophysics
  2016arXiv160600057S,k2,astrophysics
  2016arXiv160603522Z,kepler,exoplanets
  2016arXiv160604047B,k2,astrophysics
  2016arXiv160604485M,kepler,exoplanets
  2016arXiv160605678S,kepler,exoplanets
  