anchor.diff:  2016arXiv160906376G,kepler,astrophysics
   2016arXiv160906387L,kepler,astrophysics
   2016arXiv160906474S,kepler,astrophysics
  +2016arXiv160906595K,kepler,astrophysics
   2016arXiv160906645G,kepler,astrophysics
   2016arXiv160907487H,kepler,astrophysics
   2016arXiv160907503N,kepler,exoplanets
  
positive.code: 2016arXiv160907989N,kepler,astrophysics
  2016arXiv160908058M,kepler,exoplanets
  2016arXiv160908110H,kepler,exoplanets
  2016arXiv161000350G,kepler,astrophysics
  2016arXiv161000721R,kepler,astrophysics
  2016arXiv161000990S,kepler,astrophysics
  
negative.code: 2016arXiv160902759S,k2,astrophysics
  2016arXiv160902760S,k2,astrophysics
  2016arXiv160902864S,kepler,astrophysics
  2016arXiv160902914C,k2,astrophysics
  2016arXiv160903209B,k2,astrophysics
  2016arXiv160903210K,k2,astrophysics
  2016arXiv160903826V,k2,astrophysics
  2016arXiv160903905F,kepler,exoplanets
  