world:
  <<: *world
  count: 5

city:
  <<: *city
  count:
    number: 10
    by: world

abode:
  <<: *abode
  count:
    number: 100
    by: city

citizen:
  <<: *citizen
  count:
    number: 2
    by: abode

Add a simple exemple for the demo blueprint
Add a simple exemple for the demo blueprint
