*** Starting State ***
[
  { Europe => ["London", "Moscow"] },
  { Asia => ["Tokyo", "Seoul"] },
  { Africa => ["Cairo", "Algiers"] },
]

*** Asia Down ***
[
  { Europe => ["London", "Moscow", "Tokyo"] },
  { Asia => [] },
  { Africa => ["Cairo", "Algiers", "Seoul"] },
]

*** Reset State ***
[
  { Europe => ["London", "Moscow"] },
  { Asia => ["Tokyo", "Seoul"] },
  { Africa => ["Cairo", "Algiers"] },
]

*** Europe Down ***
[
  { Europe => [] },
  { Asia => ["Tokyo", "Seoul", "London"] },
  { Africa => ["Cairo", "Algiers", "Moscow"] },
]

*** Asia Down ***
[
  { Europe => [] },
  { Asia => [] },
  { Africa => ["Cairo", "Algiers", "Moscow", "Tokyo"] },
]