Initially, the population size of deme A stood at 5706, but this changed 4842.2 generations ago when it decreased to 114, and it has been stable at that size up to today.
time_units: generations
demes:
  - name: A
    start_time: .inf
    epochs:
      - start_size: 5706
        end_time: 4842.2
      - start_size: 114
        end_time: 0