text: // author: Jannik Strötgen
  // email:  stroetgen@uni-hd.de
  // date:   2015-03-31
  // This file contains rules for the temporal expressions of the type duration: durationrules
  // RULENAME="",EXTRACTION="",NORM_VALUE=""
  //(,OFFSET="")?(,POS_CONSTRAINT="")?(,NORM_MOD="")?(,NORM_QUANT="")?(,NORM_FREQ="")?
  
  // r1a: 300 years (with flexible endings of reUnit patterns)
  RULENAME="duration_r1a",EXTRACTION="([\d]+) %reUnit[^\s\.,!\?"']?[^\s\.,!\?"']?",NORM_VALUE="Pgroup(1)%normUnit4Duration(group(2))"
  
  // r2a: two years
  RULENAME="duration_r2a",EXTRACTION="%reDayNumberWord4Duration %reUnit[^\s\.,!\?"']?[^\s\.,!\?"']?",NORM_VALUE="P%normDayNumberWord4Duration(group(1))%normUnit4Duration(group(2))"
  