#gait.rate__pace  the rate of moving (especially walking or running)
  supertype:  rate  a magnitude or frequency relative to a time unit; "they traveled at a rate of 55 miles per hour"; "the rate of change was faster than expected"
  subtype:  quick_time__quicktime  a normal marching pace of 120 steps per minute
  subtype:  double_time.gait__doubletime  a fast marching pace (180 steps/min) or slow jog
  subtype:  beats_per_minute__beatsperminute__bpm__metronome_marking__metronomemarking__M.M.  (music) the pace of music measured by the number of beats occurring in 60 seconds

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