text: ## create the data for the plot showing the DYNAMIC query response times for all valid queries
  
  import sys
  sys.path.append('../../')
  sys.path.append('../')
  
  from churn import *
  
  defaultalpha = 1.25
  defaultbeta = 0.7
  
  import argparse
  parser = argparse.ArgumentParser()
  parser.add_argument("experiment", choices=["beijing"], type=str, help="Choose which experiment (dataset) to run.")
  
  args = parser.parse_args()
  
  
  
  #############################
  
  
  print("Start writing the active vehicle periods...")
  
  write_active_time(folder=beijing_folder, filename="vehicles.dat", delta=15)
  
  print("...done")