anchor.diff:  Alan Lindsay Mackay,
   Alan Lloyd Hodgkin,11
   Alan M. Taylor,343
  -Alan Mackworth,
  +Alan Mackworth,173
   Alan Mathison Turing,57
   Alan Munro,101
   Alan N. Shapiro,
  
positive.code: Zeynep Korkmaz,221
  Zhores I. Alferov,35
  Ziad Rafiq Beydoun,6
  Ziaowei Tang,
  Ziauddin Ahmed,170
  Zivar bey Ahmadbeyov,0
  Zoltan Hajos,82
  
negative.code: Michael James Steuart Dewar,19
  Michael Katehakis,110
  Michael Kay,522
  Michael Kerin Morgan,50
  Michael L. Littman,265
  Michael Larson,516
  Michael Levitt,
  